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Csaba Moskát - One of the best experts on this subject based on the ideXlab platform.
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break down of arms race between the red backed shrike Lanius collurio and common cuckoo cuculus canorus
Behaviour, 2004Co-Authors: Péter Lovászi, Csaba MoskátAbstract:The red-backed shrike Lanius collurio once was parasitised by the common cuckoo Cuculus canorus in low frequency until the late 1960s in Hungary, but no case of parasitism is known from the last three or four decades. The cuckoo most probably abandoned this host species because its arms race had defeated, which may be indicated by the high level egg recognition and rejection ability of shrikes. However, mimicry of the cuckoo eggs in the last known cases of parasitism was significantly lower than between cuckoo eggs and host eggs collected from great reed warbler Acrocephalus arundinaceus nests within the same period. This suggests that red-backed shrikes won the arms race leaving no chance for cuckoos to develop better mimicry for their eggs. We tested these findings with experimentally induced parasitism using two types of real eggs: red-backed shrikes rejected 57.6% of the foreign conspecific eggs, but rejected 93.3% of the real cuckoo eggs transferred form nests of great reed warblers. This high level of rejection against real cuckoo eggs shows that there is no chance for presently occurring cuckoos to reparasitise red-backed shrikes in Hungary. Experimental eggs rejected by shrikes had lower mimicry than the eggs which were accepted, but intraclutch variation did not differ between accepters and rejecters. Hosts' aggression was significantly higher against the stuffed cuckoo than against the control species, the collared dove Streptopelia decaocto, and it was the least against female red-backed shrikes. Red-backed shrikes high aggression against cuckoo dummies also showed a highly developed antiparasite adaptation.
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reactions of red backed shrikes Lanius collurio to artificial cuckoo cuculus canorus eggs
Journal of Avian Biology, 1999Co-Authors: Csaba Moskát, Tibor Istvan FuiszAbstract:To test the evolutionary arms race hypothesis (Dawkins and Krebs 1979) on the Red-backed Shrike-Cuckoo host-parasite relationship, a field test was carried out by placing artificial Cuckoo Cuculus canorus eggs into 52 Red-backed Shrike Lanius collurio clutches in Hungary. Two types of plastic eggs were introduced into shrike nests: (1) mimetic spotted eggs, and (2) blue eggs. Both types of eggs were placed into the nests either during the egg-laying period or at the beginning of the incubation period. The hosts ejected the foreign egg (71.2%), deserted the nest (19.2%), or accepted the foreign egg (9.6%). The blue egg was ejected more frequently than the mimetic egg. Desertion of nests in which the spotted egg was introduced was most frequent during the laying period, but after incubation started, females usually responded to the foreign egg by ejecting it. When ejection and desertion were treated together as rejection of the parasitic egg, no significant differences were found between the egg types and nest stages. Our results support the idea that Red-backed Shrikes are able to recognize their own eggs and reject parasitic eggs. This species could have been a host of the Cuckoo in the past, but when it learned to identify the parasitic eggs, the Cuckoo switched host species rather than evolving perfectly mimetic eggs to counteract the host's recognition ability.
López-jurado Carlos - One of the best experts on this subject based on the ideXlab platform.
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Homologació de rareses ornitològiques a Balears. Informe de 2010
Grup Balear d'Ornitologia i Defensa de la Naturalesa, 2010Co-Authors: López-jurado Carlos, Muntaner Jordi, Rebassa Maties, García Oscar, Martínez Oliver, Nicoll Steve, Herrero Carlos, Comitè De Rareses Ornitològiques A Balears Del GobAbstract:Homologació de rareses ornitológiques a Balears. Informe de 2010. Vintè informe anual que presenta el Comitè de Rareses Ornitològiques del GOB. S’han homologat 31 registres, corresponents a les seguents espècies, de les quals destaquen dos re gistre homologats per primera vegada a les Balears, de la gavina atlàntica subespècie Larus argentatus argentatus. Altres cites són: rascletó Porzana parva, rasclet gris Porzana pusilla, fuell de collar Endromias morinellus, gavina atlàntica Larus argentatus, llambritja becvermella Hydroprogne caspia, siboc Caprimulgus ruficollis, coadreta Cercotrichas galactotes, boscaler Locustella luscinioides, bosqueta pàl·lida Hippolais opaca, busqueret emmascarat Sylvia hortensis, capsigrany d’esquena roja Lanius collurio, gorrió d’ala blanca Montifringilla nivalis, pinsà trompeter Bucanetes githagineus i sit blanc Plectrophenax nivalis. També s’hi in clouen 10 observa cions a Balea rs homologa des pel Comité de Rarezas de la Sociedad Españo la de Ornitolo gía (CR-SEO), en què destaquen un re gistre homologat per primera vegada a les Balears, coa-roja diademada Phoenicurus moussieri. Les altres observacions són cegall reial Gallinago media, tórtora del Senegal Streptopelia senegalensis, titina de Hodgson Anthus hodgsoni, busqueret xerraire Sylvia curruca, ull de bou de dues retxes Phylloscopus inornatus, menjamosques de collar Ficedu la albicollis.Ratification of ornithological rarities in the Balearics. 2010 Report. The twentieth annual report of the GOB Ornithological Rarities Committee is presented. Thirty-one records have been accepted relating to the following species, including the first two Balearic sightings of the Herring gull subspecies Larus argentatus argentatus. The remaining records comprise Little crake Porzana parva, Baillon’s crake Porzana pusilla,Dotterel Endromias morinellus, herring gull L. argentatus, Caspian tern Hydroprogne caspia, Red-necked nightjar Caprimulgus ruficollis, Rufous bush robin Cercotrichas galactotes, Savi’s warbler Locustella luscinioides, Western olivaceous warbler Hippolais opaca, Orphean warbler Sylvia hortensis, red-backed shrike Lanius collurio, snow finch Montifringilla nivalis, Trumpeter finch Bucanetes githagineus and Snow bunting Plectrophenax nivalis. Also included are ten Balearic records accepted by the Spanish Rarities Committee (CR-SEO), the most notable of which is the first record of Moussier’s redstart Phoenicurus moussieri. The others are great snipe Gallinago media, Laughing dove Streptopelia senegalensis, Olive-backed pipit Anthus hodgsoni, Lesser whitethroat Sylvia curruca, Yellow-browed warbler Phylloscopus inornatus and Collared flycatcher Ficedula albicollis
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Homologació de rareses ornitològiques a Balears. Informe de 2009
Grup Balear d'Ornitologia i Defensa de la Naturalesa, 2009Co-Authors: López-jurado Carlos, Bonnín Jaume, Escandell Raül, Muntaner Jordi, Rebassa Maties, Sunyer Josep, Comitè De Rareses Ornitològiques A Balears Del GobAbstract:Homologació de rareses ornitològiques a Balears. Informe de 2009. dinovè informe anual que presenta el Comitè de Rareses Ornitològiques del GOB. S’han homologat 31 registres, corresponents a les seguents espècies, de les quals destaca un re gistre homologat per primera vegada a les Balears, la gralla Corvus monedula. Altres cites són: negreta Melanitta nigra, rascletó Porzana parva, fuell de collar Charadrius morinellus, gavina atlàntica Larus argentatus, gavinot Larus marinus, cotoliu Lullula arborea, bosqueta pàl·lida Hippolais opaca, busqueret emmascarat Sylvia hortensis, ull de bou ibèric Phylloscopus ibericus, capsigrany roig Lanius collurio, gorrió d’ala blanca Montifringilla nivalis, pinsà trompeter Bucanetes githagineus, hortolà blanc Plectrophenax nivalis i hortolà groc Emberiza citrinella. També s’hi in clouen 15 observa cions a Balea rs homologa des pel Comité de Rarezas de la Sociedad Españo la de Ornitolo gía (CR-SeO), en què destaquen quatre re gistres homologats per primera vegada a les Balears, el moretó de collar Aythya collaris, corriol coablanca Calidris fuscicollis, boscarla de Blyth Acrocephalus dumetorum i busqueret sard Sylvia sarda. les altres observacions són l’arpella pàl·lida Circus macrourus, cegall reial Gallinago media, titina d’esquena olivàcia Anthus hodgsoni, busqueret xerraire Sylvia curruca, busqueret garriguer subespècie oriental Sylvia cantillans albistriata, i ull de bou de dues retxes Phylloscopus inornatus.Balearic Bird Rarities Committee report for 2009. The Ornithological Rarities Committee of the GOB presents its annual report. A total of 31 records was accepted corresponding to the following species, which include one first Balearic record, jackdaw Corvus monedula. The other records were: common scoter Melanitta nigra, little crake Porzana parva, dotterel Charadrius morinellus, herring gull Larus argentatus, great black-backed gull Larus marinus, woodlark Lululla arborea, western olivaceous warbler Hippolais opaca, orphean warbler Sylvia hortensis, iberian chiffchaff Phylloscopus ibericus, red-backed shrike Lanius collurio, snowfinch Montifringilla nivalis, trumpeter finch Bucanetes githagineus, snow bunting Plectrophenax nivalis, yellowhammer Emberiza citrinella. An additional 15 Balearic records were determined by the national Rarities Committee of the Sociedad española de Ornitologia (CR-SeO), the most notable of which were 4 first records for the Balearics: ring-necked duck Aythya collaris, white-rumped sandpiper Calidris fuscicollis, Blyth’s reed warbler Acrocephalus dumetorum and Marmora’s warbler Sylvia sarda. The other accepted records were pallid harrier Circus macrourus, great snipe Gallinago media, olive-backed pipit Anthus hodgsoni, lesser whitethroat Sylvia curruca, the eastern subspecies of the subalpine warbler Sylvia cantillans albistriata and yellowbrowed warbler Phylloscopus inornatus
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Homologació de rareses ornitològiques a Balears. Informe de 2007
Grup Balear d'Ornitologia i Defensa de la Naturalesa, 2007Co-Authors: López-jurado CarlosAbstract:Homologació de rareses ornitológiques a Balears. Informe de 2007. Dessetè informe anual que presenta el Comitè de Rareses Ornitològiques del GOB a Balears. S’han homologat 38 registres, corresponents a les següents espècies: negreta Melanitta nigra, astor Accipiter gentilis (primera observació), esmerla Falco columbarius, gavinot Larus marinus (primera cita), llambritja becvermella Sterna caspia, cucui reial Clamator glandarius, cotoliu Lullula arborea (primer registre), bosqueta pàl·lida Hippolais opaca, busqueret emmascarat Sylvia hortensis, ull de bou ibèric Phylloscopus ibericus (primers 12 registres), capsigrany d’esquena roja Lanius collurio, garsa Pica pica (primera observació), gralla de bec vermell Pyrrhocorax pyrrhocorax i hortolà negre Emberiza cia. També s’hi inclouen 10 observacions a Balears homologades pel Comité de Rarezas de la Sociedad Española de Ornitología (CR-SEO), corresponents a l’informe de 2005, en què destaquen l’àguila pomerània Aquila pomarina (segona observació a Balears i tercera a Espanya) i la guatlereta d’ala negra Glareola nordmanni (també segona cita a Espanya i Balears). Les altres espècies són ibis sagrat Threskiornis aethiopiucus (d’origen desconegut), becassina reial Gallinago media, ull de bou de dues retxes Phylloscopus inornatus, i menjamosques de collar Ficedula albicollis.Accepted Records of Balearic Rare Birds. Report for 2007. The seventeenth annual report of the GOB Bird Rarities Committee is presented for the Balearics. Thirty-eight records were accepted, corresponding to the following species: common scoter Melanitta nigra, goshawk Accipiter gentilis (first record), merlin Falco columbarius, great black-backed gull Larus marinus (first record), Caspian tern Sterna caspia, great spotted cuckoo Clamator glandarius, woodlark Lullula arborea (first record), olivaceous warbler Hippolais opaca, orphean warbler Sylvia hortensis, Spanish chiffcaff Phylloscopus ibericus (first 12 records), red-backed shrike Lanius collurio, magpie Pica pica (first record), red-billed chough Pyrrhocorax pyrrhocorax and rock bunting Emberiza cia. A further 10 Balearic observations were accepted by the Spanish Ornithological Society Rarities Committee (CR-SEO) corresponding to the year 2005, the most outstanding of which were the lesser spotted eagle Aquila pomarina (second Balearic record and third for Spain) and black-winged pratincole Glareola nordmanni (second record for the Balearics and for Spain). The other species were sacred ibis Threskiornis aethiopiucus (of unknown origin), great snipe Gallinago media, yellow-browe
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Homologació de rareses ornitològiques a Balears. Informe de 2006
Grup Balear d'Ornitologia i Defensa de la Naturalesa, 2006Co-Authors: López-jurado CarlosAbstract:Homologació de rareses ornitològiques a Balears. Informe de 2006. Setzè informe anual que presenta el Comitè de Rareses Ornitològiques del GOB. S’han homologat 12 registres, corresponents a les seguents espècies, esmerla Falco columbarius, guàtlera maresa Crex crex, fuell de collar Charadrius morinellus, siboc Caprimulgus ruficollis, coaric Aegithalos caudatus, capsigrany d’esquena roja Lanius collurio, estornell negre Sturnus unicolor, gorrió d’ala blanca Montifringilla nivalis, pinsà trompeter Bucanetes githagineus i hortolà negre Emberiza cia. També s’hi inclouen 5 observacions a Balears homologades pel Comité de Rarezas de la Sociedad Española de Ornitología (CR-SEO), corresponent a l’informe de 2004, en què destaquen tres registres homologats per primera vegada a les Balears, el abellerol gola-roig Merops persicus, tord daurat Zoothera dauma (dada antiga de 1912), i pinsà del desert Rhodospiza obsoleta (d’origen desconegut). Les altres observacions són del menjamosques de collar Ficedula albicollis.Ratification of bird records in the Balearics. Rarities report for 2006. The 16th annual report of the Rare Birds Committee of the GOB is presented. Twelve records were ratified, corresponding to the following species: merlin Falco columbarius, corncrake Crex crex, dotterel Charadrius morinellus, red-necked nightjar Caprimulgus ruficollis, long-tailed tit Aegithalos caudatus, red-backed shrike Lanius collurio, spotless starling Sturnus unicolor, snow bunting Montifringilla nivalis, trumpeter finch Bucanetes githagineus and rock bunting Emberiza cia. Records are also included for 5 observations in the Balearics ratified by the Rarities Committee of the Spanish Ornithological Society (CR-SEO), corresponding to their report for 2004, in which the highlight was the acceptance of three species recorded for the first time in the Balearics: blue-cheeked bee-eater Merops persicus, White’s Thrush Zoothera dauma (an historical record from 1912), and desert finch Rhodospiza obsoleta (of unknown origin). The other records involved collared flycatchers Ficedula albicollis
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Homologació de rareses ornitològiques a Balears. Informe de 2005
Grup Balear d'Ornitologia i Defensa de la Naturalesa, 2005Co-Authors: López-jurado CarlosAbstract:Homologació de rareses ornitològiques a Balears. Informe de 2005. Quinzè informe anual que presenta el Comitè de Rareses Ornitològiques del GOB. S’han homologat 31 registres, corresponents a les seguents espècies: cigne mut Cygnus olor, esmerla Falco columbarius, rascletó Porzana parva, rasclet gris Porzana pusilla, fuell de collar Charadrius morinellus, llambritja becvermell Sterna caspia, cucui reial Clamator glandarius, siboc Caprimulgus ruficollis, coadreta Cercotrichas galactotes, boscaler Locustella luscinioides, bosqueta pàl·lida Hippolais opaca, busqueret emmascarat Sylvia hortensis, coaric Aegithalos caudatus, ferrerico petit Parus ater, capsigrany d’esquena roja Lanius collurio i hortolà blanc Plectrophenas nivalis. També hi incloem 14 observacions a Balears homologates pel Comité de Rarezas de la Sociedad Española de Ornitología (CR-SEO) corresponents a l’informe de 2003. Hi destaquen dues homologacions fetes per primera vegada a les Balears: un coablanca del desert Oenanthe deserti i una bosqueta asiàtica Hippolais caligata. La resta d’espècies són: ibis sagrat Threskiornis aethiopicus, fuell de collar Charadrius morinellus, corriol pectoral Calidris melanotos, ull de bou de dues retxes Phylloscopus inornatus, ull de bou de Schwarz Phylloscopus schwarzi, menjamosques barba-roja Ficedula parva, menjamosques de collar Ficedula albicollis, capsigrany subespècie asiàtica Lanius senator niloticus, pinsà carminat Carpodacus erythrinus i sit petit Emberiza pusilla.Accepted records of bird rarities in the Balearics. Report for 2005. Fifteenth annual report presented by the GOB Bird Rarities Committee. Thirty-one records were accepted, relating to the following species: mute swan Cygnus olor, merlin Falco columbarius, little crake Porzana parva, Baillon’s crake Porzana pusilla, dotterel Charadrius morinellus, Caspian tern Sterna caspia, great spotted cuckoo Clamator glandarius, red-necked nightjar Caprimulgus ruficollis, rufous bush-chat Cercotrichas galactotes, Savi’s warbler Locustella luscinioides, western olivaceous warbler Hippolais opaca, orphean warbler Sylvia hortensis, long-tailed tit Aegithalos caudatus, coal tit Parus ater, red-backed shrike Lanius collurio and snow bunting Plectrophenas nivalis. We also include 14 sightings in the Balearic Islands of species accepted by the Rarities Committee of the Spanish Society of Ornithology (CR-SEO) in its annual report for 2003. The most notable involve two accepted as first Balearic records: a desert wheatear Oenanthe deserti and a booted warbler Hippolais caligata. The other species are sacred ibis Threskiornis aethiopicus, dotterel Charadrius morinellus , pectoral sandpiper Calidris melanotos, yellow-browed warbler Phylloscopus inornatus, dusky warbler Phylloscopus schwarzi, redbreasted flycatcher Ficedula parva, collared flycatcher Ficedula albicollis, the eastern subspecies of the woodchat shrike Lanius senator niloticus, scarlet rosefinch Carpodacus erythrinus and the little bunting Emberiza pusilla
Piotr Tryjanowski - One of the best experts on this subject based on the ideXlab platform.
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Does experimentally simulated presence of a common cuckoo (Cuculus canorus) affect egg rejection and breeding success in the red-backed shrike (Lanius collurio)?
acta ethologica, 2021Co-Authors: Piotr Tryjanowski, Artur Golawski, Mariusz Janowski, Tim H SparksAbstract:Providing artificial eggs is a commonly used technique to understand brood parasitism, mainly by the common cuckoo ( Cuculus canorus ). However, the presence of a cuckoo egg in the host nest would also require an earlier physical presence of the common cuckoo within the host territory. During our study of the red-backed shrike ( Lanius collurio ), we tested two experimental approaches: (1) providing an artificial “cuckoo” egg in shrike nests and (2) additionally placing a stuffed common cuckoo with a male call close to the shrike nest. We expected that the shrikes subject to the additional common cuckoo call stimuli would be more sensitive to brood parasitism and demonstrate a higher egg rejection rate. In the years 2017–2018, in two locations in Poland, a total of 130 red-backed shrike nests were divided into two categories: in 66 we added only an artificial egg, and in the remaining 64 we added not only the egg, but also presented a stuffed, calling common cuckoo. Shrikes reacted more strongly if the stuffed common cuckoo was present. However, only 13 incidences of egg acceptance were noted, with no significant differences between the locations, experimental treatments or their interaction. Analysis of breeding success revealed significant differences between the locations, between experimental treatments and their interaction, which suggests a strong location effect. The red-backed shrike is an efficient rejector of foreign eggs. It would be interesting to see how similar tests affect hosts that have much higher rates of brood parasitism and egg acceptance.
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saving the best for last differential usage of impaled prey by red backed shrike Lanius collurio during the breeding season
Behavioural Processes, 2015Co-Authors: Piotr Tryjanowski, Artur Golawski, Federico Morelli, Raphael Bussiere, Reuven YosefAbstract:Abstract We compared the prey composition of the red-backed shrike’s (Lanius collurio) larders in agricultural habitats in Italy, France and Poland. This species exhibits the behaviour of impaling prey in larders, a behaviour attributed not only to storing food, but also as a social indication for sexual selection and/or demarcation of territories. A total of 426 impaled items were identified in 244 larders. Most common prey were identified for each country: Insecta (Hymenoptera) in Italy, Amphibia, Insecta (Diptera) and Clitellata in Poland, and Insecta (Orthoptera, Lepidoptera) in France. We found no relationship between type of prey impaled and height of impalement, however, we noted a negative relationship between the height of impalement and the distance to the nearest road. Furthermore, impaled toxic prey were found in all three countries, strengthening the possibility that prey are exposed to expedite the degradation of toxins or used as a social signal. Our results showed that the average weight of impaled prey was greater during the last reproductive stage (hatching and feeding young), providing evidence of differential usage of impaled prey during the breeding season. We therefore hypothesize that larger animals provide more energy, then vertebrates are preferred to invertebrates, especially when parents are feeding their nestlings.
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costly replacement how do different stages of nest failure affect clutch replacement in the red backed shrikes Lanius collurio
Ethology Ecology & Evolution, 2009Co-Authors: Marcin Antczak, Stanislaw Kuźniak, Artur Golawski, Piotr TryjanowskiAbstract:Re-nesting is costly and strongly stage- and time-related in the redbacked shrike. We tested whether failure which occurred at more costly developmental stages of the first clutches influenced the characteristics of replacement clutches in red-backed shrike Lanius collurio. Field work was conducted in the breeding seasons 1999-2006 at three study plots in Poland. During nest visits, standard data on breeding biology were collected, including clutch size, eggs measurements, laying date, and number of nestlings. We found significant differences in the clutch size of replaced clutches according to the failure phase of first clutches. Pairs which experienced brood failure at the nestling phase produced smaller replacement clutches than pairs whose nest was destroyed at the egg laying stage. There were no differences in the nesting success of replaced cluches relative to the stage where the first clutch was lost. However, pairs which failed during the nes tling phase of the first clutch significantly more often skipped further repro duction in that season than those which failed during other phases. For breeding red-backed shrikes the best strategy is to initiate clutches as early as possible because it gives a more time for possible re-nesting.
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male biased sex of extra pair young in the socially monogamous red backed shrike Lanius collurio
Acta Ornithologica, 2008Co-Authors: Lucie Schwarzova, Jaroslav Simek, Timothy Coppack, Piotr TryjanowskiAbstract:Females of many socially monogamous bird species engage in — or even actively seek — copulations outside their social pair bond. However, in socially monogamous birds with low breeding abundance, such as the Red-backed Shrike, extra-pair paternity (EPP) was thought to be an exceptional and random incident. Drawing on samples collect- ed in an unusually dense Red-backed Shrike population in the Czech Republic, we show through DNA microsatellite typing that among 65 chicks from 15 nests, 10 individuals (26.5%) had been sired by males other than the nest-attend- ing social mate. All 10 extra pair young were of male sex. In all cases, genetic fathers of extra pair young stemmed from neighbouring territories. Extra pair fathers had significantly longer tarsi than social mates, indicating that female choice was a function of age-class dependent male body size. Our findings support sex allocation theory, which suggests that promiscuous females mating with higher quality males should produce mostly sons.
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should avian egg size increase as a result of global warming a case study using the red backed shrike Lanius collurio
Journal of Ornithology, 2004Co-Authors: Piotr Tryjanowski, Tim H Sparks, Lechoslaw Kuczynski, Stanislaw KuźniakAbstract:From some life-history traits, avian egg size can be postulated as potentially affected by climate change. In this paper, we present and discuss the potential effect of mean temperature in the breeding season on egg size of the red-backed shrike (Lanius collurio). During the 1971–2002 study period, egg volume of the red-backed shrike decreased significantly, birds arrived at the breeding site significantly earlier, and arrival date was correlated with the earliest first egg date. To our knowledge, we present the first evidence that avian egg size decreased significantly in a long-term study. However, we do not have experimental manipulations in support of our data and we can only conclude that the decrease in egg volume in the studied population might result as a consequence of a number of factors, including changes in temperature, as well as in food supply. Therefore climate change effects on a bird’s life-history traits can be more complex than just the simple direct effect of temperature.
Tim H Sparks - One of the best experts on this subject based on the ideXlab platform.
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Does experimentally simulated presence of a common cuckoo (Cuculus canorus) affect egg rejection and breeding success in the red-backed shrike (Lanius collurio)?
acta ethologica, 2021Co-Authors: Piotr Tryjanowski, Artur Golawski, Mariusz Janowski, Tim H SparksAbstract:Providing artificial eggs is a commonly used technique to understand brood parasitism, mainly by the common cuckoo ( Cuculus canorus ). However, the presence of a cuckoo egg in the host nest would also require an earlier physical presence of the common cuckoo within the host territory. During our study of the red-backed shrike ( Lanius collurio ), we tested two experimental approaches: (1) providing an artificial “cuckoo” egg in shrike nests and (2) additionally placing a stuffed common cuckoo with a male call close to the shrike nest. We expected that the shrikes subject to the additional common cuckoo call stimuli would be more sensitive to brood parasitism and demonstrate a higher egg rejection rate. In the years 2017–2018, in two locations in Poland, a total of 130 red-backed shrike nests were divided into two categories: in 66 we added only an artificial egg, and in the remaining 64 we added not only the egg, but also presented a stuffed, calling common cuckoo. Shrikes reacted more strongly if the stuffed common cuckoo was present. However, only 13 incidences of egg acceptance were noted, with no significant differences between the locations, experimental treatments or their interaction. Analysis of breeding success revealed significant differences between the locations, between experimental treatments and their interaction, which suggests a strong location effect. The red-backed shrike is an efficient rejector of foreign eggs. It would be interesting to see how similar tests affect hosts that have much higher rates of brood parasitism and egg acceptance.
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should avian egg size increase as a result of global warming a case study using the red backed shrike Lanius collurio
Journal of Ornithology, 2004Co-Authors: Piotr Tryjanowski, Tim H Sparks, Lechoslaw Kuczynski, Stanislaw KuźniakAbstract:From some life-history traits, avian egg size can be postulated as potentially affected by climate change. In this paper, we present and discuss the potential effect of mean temperature in the breeding season on egg size of the red-backed shrike (Lanius collurio). During the 1971–2002 study period, egg volume of the red-backed shrike decreased significantly, birds arrived at the breeding site significantly earlier, and arrival date was correlated with the earliest first egg date. To our knowledge, we present the first evidence that avian egg size decreased significantly in a long-term study. However, we do not have experimental manipulations in support of our data and we can only conclude that the decrease in egg volume in the studied population might result as a consequence of a number of factors, including changes in temperature, as well as in food supply. Therefore climate change effects on a bird’s life-history traits can be more complex than just the simple direct effect of temperature.
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is the detection of the first arrival date of migrating birds influenced by population size a case study of the red backed shrike Lanius collurio
International Journal of Biometeorology, 2001Co-Authors: Piotr Tryjanowski, Tim H SparksAbstract:Many analyses do not consider the problems associated with the effects of population size on encounter recording. Population size could impact on the detection of bird arrival time as there is a higher probability of observing earlier arrival when the population size is greater and the song activity of birds is increased, as occurs with a larger population. As a case study, we have analysed data on the red-backed shrike Lanius collurio collected in Western Poland during 1983–2000. In this period the red-backed shrike’s return to its breeding sites became significantly earlier whilst the contemporary population size increased significantly. To eliminate linear trends through time we have worked on the standardised residuals from regression of both arrival time and population size on year. The correlation between arrival time and population size residuals was significantly negative, further supporting the link between detection and population size. This finding suggests that, in studies of avian migration and its changes over time, the relationship between arrival date and population size needs to be considered.
José Antonio - One of the best experts on this subject based on the ideXlab platform.
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Salida de campo a Sonnenberg (cantón de Lucerna, Suiza) el 1 de junio de 1954
2009Co-Authors: Valverde Gómez, José AntonioAbstract:Salida de campo a Sonnenberg, en el cantón de Lucerna (Suiza), el 1 de junio de 1954, de la que se anotaron observaciones sobre las siguientes aves: Carduelis carduelis (Jilguero), Certhia sp. (Agateador, también conocido como Chapin), Columba sp. (Paloma), Corvus corone (Corneja negra), Fringilla coelebs (Pinzón vulgar), Hirundo sp. (Golondrina), Lanius collurio (Alcaudón dorsirrojo), Motacilla alba (Lavandera blanca), Parus major (Carbonero común, también conocido como Chapin), Passer montanus (Gorrión molinero), Phoenicurus phoenicurus (Colirrojo real), Pica pica (Urraca, llamada "marica" y "picarza" por el autor), Picus viridis (Pito real), Streptopelia sp. (Tórtola), Sturnus vulgaris (Estornino pinto), Sylvia atricapilla (Curruca capirotada) y Turdus merula (Mirlo común).Field trip to Sonnenberg, at the Canton of Lucerne (Switzerland), the 1st of June of 1954, of which there were noted observations about the following birds: Carduelis carduelis (European Goldfinch), Certhia sp. (Tree-creeper), Columba sp. (Pigeon), Corvus corone (Carrion Crow), Fringilla coelebs (Chaffinch), Hirundo sp. (Swallow), Lanius collurio (Red-backed Shrike), Motacilla alba (White Wagtail), Parus major (Great Tit), Passer montanus (Eurasian Tree Sparrow), Phoenicurus phoenicurus (Common Redstart), Pica pica (Black-billed Magpie), Picus viridis (Eurasian Green Woodpecker), Streptopelia sp. (Turtle-dove), Sturnus vulgaris (Common Starling), Sylvia atricapilla (Blackcap) and Turdus merula (Eurasian Blackbird)
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Salida de campo a Suances (Cantabria) el 27 y 28 de agosto de 1950
2009Co-Authors: Valverde Gómez, José AntonioAbstract:Salida de campo a Suances, Cantabria, el 27 y 28 de agosto de 1950, de la que se anotaron observaciones sobre las siguientes aves: Actitis hypoleucos (Andarríos chico, llamado Actynioides hypoleucus por el autor), Arenaria interpres (Vuelvepiedras común), Calidris sp. (Correlimos), Carduelis cannabina (Pardillo común, llamada Colorín y Acanthis cannabina por el autor), Carduelis carduelis (Jilguero), Charadrius hiaticula (Chorlitejo grande), Corvus corax (Cuervo), Falco tinnunculus (Cernícalo vulgar), Haematopus ostralegus (Ostrero euroasiático), Lanius collurio (Alcaudón dorsirrojo), Larus argentatus (Gaviota argéntea), Larus fuscus (Gaviota sombría), Larus ridibundus (Gaviota reidora), Motacilla alba (Lavandera blanca), Phalacrocorax aristotelis (Cormorán Moñudo), Phalacrocorax sp. (Cormorán), Saxicola rubetra (Tarabilla norteña), Saxicola torquata (Tarabilla común) y Tringa totanus (Archibebe común). Incluye una pequeño mapa de la ruta seguida.Field trip to Suances, Cantabria, the 27th and 28th of August of 1950, of which there were noted observations about the following birds: Actitis hypoleucos (Common Sandpiper, refered as Actynioides hypoleucus by the author), Arenaria interpres (Ruddy Turnstone), Calidris sp. (Sandpiper), Carduelis cannabina (Eurasian Linnet, refered as Acanthis cannabina by the author), Carduelis carduelis (European Goldfinch), Charadrius hiaticula (Common Ringed Plover), Corvus corax (Common Raven), Falco tinnunculus (Common Kestrel), Haematopus ostralegus (Eurasian Oystercatcher), Lanius collurio (Red-backed Shrike), Larus argentatus (Herring Gull), Larus fuscus (Lesser Black-backed Gull), Larus ridibundus (Common Black-headed Gull), Motacilla alba (White Wagtail), Phalacrocorax aristotelis (European Shag), Phalacrocorax sp. (Cormorant), Saxicola rubetra (Whinchat), Saxicola torquata (African Stonechat) and Tringa totanus (Common Redshank). A little map of the route of the trip is included
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Conclusiones ecológicas sobre la avifauna de Santo Domingo de Silos (Burgos), en 1953
2009Co-Authors: Valverde Gómez, José AntonioAbstract:Conclusiones ecológicas sobre la avifauna de Santo Domingo de Silos, en Burgos, obtenidas a lo largo de numerosas salidas de campo realizadas en 1953, en las que se incluye información sobre las siguientes aves: "A.monticola", Accipiter nisus (Gavilán común, también llamado Astur palumbarius por el autor), Aquila sp. (Águila), "Biblis rupestris", Cinclus cinclus (Mirlo acuático), Clamator glandarius (Críalo europeo), Emberiza cia (Escribano montesino), Garrulus glandarius (Arrendajo), Gypaetus barbatus (Quebrantahuesos), Gyps fulvus (Buitre leonado)Lanius collurio (Alcaudón dorsirrojo), Merops apiaster (Abejaruco europeo), Monticola saxatilis (Roquero rojo), Motacilla cinerea (Lavandera cascadeña), Neophron percnopterus (Alimoche común, también conocido como Buitre blanco), Oenanthe leucura (Collalba negra), Perdix perdix (Pediz pardilla), Pyrrhocorax pyrrhocorax (Chova piquirroja) y Tachymarptis melba (Vencejo real, llamado Apus melba por el autor). Incluye alguna observación sobre la vegetación del lugar.Ecological conclusions about the avifauna of Santo Domingo de Silos, at Burgos, obtained from several field trips carried out in 1953, in which these is included information about the following birds: "A.monticola", Accipiter nisus (Eurasian Sparrowhawk, also refered as Astur palumbarius by the author), Aquila sp. (Eagle), "Biblis rupestris", Cinclus cinclus (White-throated Dipper), Clamator glandarius (Great Spotted Cuckoo), Emberiza cia (Rock Bunting), Garrulus glandarius (Eurasian Jay), Gypaetus barbatus (Lammergeier), Gyps fulvus (Eurasian Griffon), Lanius collurio (Red-backed Shrike), Merops apiaster (European Bee-eater), Monticola saxatilis (Rufous-tailed Rock-thrush), Motacilla cinerea (Grey Wagtail), Neophron percnopterus (Egyptian Vulture), Oenanthe leucura (Black Wheatear), Perdix perdix (Grey Partirdge), Pyrrhocorax pyrrhocorax (Red-billed Chough) and Tachymarptis melba (Alpine Swift, refered as Apus melba by the author). Some observations about the vegetation of the area are included
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Salida de campo a Santander y Obregón, en Cantabria, el 18 de agosto de 1950
2009Co-Authors: Valverde Gómez, José AntonioAbstract:Salida de campo a Santander y Obregón, en Cantabria, el 18 de agosto de 1950, de la que se anotaron observaciones sobre las siguientes aves: Agachadiza (Gallinago sp. o Lymnocryptes minimus), Anas sp. (Ánade)Apus sp. (Vencejo), Athene noctua (Mochuelo europeo), Buteo buteo (Busardo ratonero, también llamado Águila ratera), Caprimulgus sp. (Chotacabras), Carduelis carduelis (Jilguero), Corvus corax (Cuervo), Delichon urbica (Avión común, llamado Chelidon urbica por el autor), Falco tinnunculus (Cernícalo vulgar), Fringilla coelebs (Pinzón vulgar), Fulica sp. (Focha), Gallinula chloropus (Gallineta común), Garrulus glandarius (Arrendajo), Hirundo rustica (Golondrina común), Lanius collurio (Alcaudón dorsirrojo), Larus argentatus (Gaviota argéntea), Larus ridibundus (Gaviota reidora), Passer domesticus (Gorrión domestico), Phalacrocorax sp. (Cormorán), Pica pica (Urraca, llamada "marica" y "picarza" por el autor), Saxicola torquata (Tarabilla común), Scolopax rusticola (Chocha perdiz, también llamada Becada), Streptopelia sp. (Tórtola), Sturnus vulgaris (Estornino pinto), Turdus merula (Mirlo común), Tyto alba (Lechuza común) y Vanellus vanellus (Avefría europea).Field trip to Santander and Obregón, at Cantabria, the 18th of August of 1950, of which there were noted observations about the following birds:, Anas sp. (Duck), Apus sp. (Swift), Athene noctua (Little Owl), Buteo buteo (Common Buzzard), Caprimulgus sp. (Nightjar), Carduelis carduelis (European Goldfinch), Corvus corax (Common Raven), Delichon urbica (House Martin, refered as Chelidon urbica by the author), Falco tinnunculus (Common Kestrel), Fringilla coelebs (Chaffinch), Fulica sp. (Coot), Gallinula chloropus (Common Moorhen), Garrulus glandarius (Eurasian Jay), Hirundo rustica (Barn Swallow), Lanius collurio (Red-backed Shrike), Larus ridibundus (Common Black-headed Gull), Larus ridibundus (Common Black-headed Gull), Passer domesticus (House Sparrow), Phalacrocorax sp. (Cormorant), Pica pica (Black-billed Magpie), Saxicola torquata (African Stonechat), Scolopax rusticola (Eurasian Woodcock), Snipe (Gallinago sp. or Lymnocryptes minimus), Streptopelia sp. (Turtle-dove), Sturnus vulgaris (Common Starling), Turdus merula (Eurasian Blackbird), Tyto alba (Barn Owl) and Vanellus vanellus (Northern Lapwing)
