Age-dependent differences in iris colouration of passerines during autumn migration in Central Europe.
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ABSTRACT:
SUBMITTER: Polakowski M
PROVIDER: S-EPMC7289142 | biostudies-literature | 2020
REPOSITORIES: biostudies-literature
Publications
Age-dependent differences in iris colouration of passerines during autumn migration in Central Europe.
Polakowski Michał M Stępniewski Krzysztof K Śliwa-Dominiak Joanna J Remisiewicz Magdalena M
PeerJ 20200608
Avian eye colour changes with age, but many aspects of this transition are still insufficiently understood. We examined if an individual's sex, age, species and body condition are related to the iris colour in common migratory passerines during their autumn passage through Central Europe. A total of 1,399 individuals from nine numerous species were ringed and examined in late autumn in northern Poland. Each individual was sexed by plumage (if possible) and assigned to one of three classes of the ...[more]
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