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Rufous Common Cuckoo chicks are not always female

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F19%3A43900041" target="_blank" >RIV/60076658:12310/19:43900041 - isvavai.cz</a>

  • Výsledek na webu

    <a href="https://ore.exeter.ac.uk/repository/bitstream/handle/10871/34874/Kolecek%20et%20al%202018%20cuckoo%20chick%20colour.pdf;jsessionid=7E9BAD22D2E07DE6F09048B0546362AC?sequence=1" target="_blank" >https://ore.exeter.ac.uk/repository/bitstream/handle/10871/34874/Kolecek%20et%20al%202018%20cuckoo%20chick%20colour.pdf;jsessionid=7E9BAD22D2E07DE6F09048B0546362AC?sequence=1</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1007/s10336-018-1591-7" target="_blank" >10.1007/s10336-018-1591-7</a>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Rufous Common Cuckoo chicks are not always female

  • Popis výsledku v původním jazyce

    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&apos; range to examine the process of plumage maturation. A detailed genetic analysis is necessary to understand the origin of Cuckoo feather colouration.

  • Název v anglickém jazyce

    Rufous Common Cuckoo chicks are not always female

  • Popis výsledku anglicky

    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&apos; range to examine the process of plumage maturation. A detailed genetic analysis is necessary to understand the origin of Cuckoo feather colouration.

Klasifikace

  • Druh

    J<sub>imp</sub> - Článek v periodiku v databázi Web of Science

  • CEP obor

  • OECD FORD obor

    10615 - Ornithology

Návaznosti výsledku

  • Projekt

  • Návaznosti

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Ostatní

  • Rok uplatnění

    2019

  • Kód důvěrnosti údajů

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Údaje specifické pro druh výsledku

  • Název periodika

    Journal of Ornithology

  • ISSN

    2193-7192

  • e-ISSN

  • Svazek periodika

    160

  • Číslo periodika v rámci svazku

    1

  • Stát vydavatele periodika

    DE - Spolková republika Německo

  • Počet stran výsledku

    9

  • Strana od-do

    155-163

  • Kód UT WoS článku

    000458029700015

  • EID výsledku v databázi Scopus

    2-s2.0-85054879586