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Rufous Common Cuckoo chicks are not always female
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SYSNO ASEP 0492290 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Rufous Common Cuckoo chicks are not always female Tvůrce(i) Koleček, Jaroslav (UBO-W) RID, ORCID, SAI
Šulc, Michal (UBO-W) RID, ORCID, SAI
Piálková, Radka (UBO-W) RID, ORCID, SAI
Troscianko, J. (GB)
Požgayová, Milica (UBO-W) RID, SAI, ORCID
Honza, Marcel (UBO-W) RID, SAI, ORCID
Procházka, Petr (UBO-W) RID, ORCID, SAICelkový počet autorů 7 Zdroj.dok. Journal of Ornithology. - : Springer - ISSN 2193-7192
Roč. 160, č. 1 (2019), s. 155-163Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova Avian vision ; Colour dimorphism ; Cuculus canorus ; Molecular analysis ; Plumage colouration ; Spectral reflectance Vědní obor RIV EG - Zoologie Obor OECD Ornithology CEP GA17-12262S GA ČR - Grantová agentura ČR Způsob publikování Omezený přístup Institucionální podpora UBO-W - RVO:68081766 UT WOS 000458029700015 EID SCOPUS 85054879586 DOI 10.1007/s10336-018-1591-7 Anotace The Common Cuckoo (hereafter Cuckoo) shows two adult plumage morphs—adult male plumage is grey and adult females are either grey or, less frequently, rufous. The situation is less clear in juveniles, as both sexes exhibit variable proportions of grey and rufous colour. We thus describe the patterns related to sex-specific plumage colour variation in a central European Cuckoo population. We genetically determined the sex of 91 Cuckoo chicks and using visual classification of photographs we scored juvenile plumage colouration of individual chicks into five classes based upon the increasing proportion of rufous colour on feathers. To verify these scores, we sampled chick feathers and quantified the proportion of rufous colour of individual feathers by digital image analysis. We found that juvenile females had a higher proportion of rufous colour of feathers than juvenile males. However, the difference was marginally non-significant based on visual inspection alone, and some male chicks even showed intensively rufous plumage like those of juvenile females. In contrast, we captured only grey adult males (n = 37), while five out of 20 adult females were rufous. The rufous colour of Cuckoo feathers considerably differed from the grey colour and the difference seemed to be larger in adults than in juveniles. We show that chicks, unlike adult females, cannot be visually assigned to either of the adult morphs. Therefore, we encourage further investigation of Cuckoo plumage colouration across the species’ range to examine the process of plumage maturation. A detailed genetic analysis is necessary to understand the origin of Cuckoo feather colouration. Pracoviště Ústav biologie obratlovců Kontakt Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524 Rok sběru 2020 Elektronická adresa http://dx.doi.org/10.1007/s10336-018-1591-7
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