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@proceedings{2311737,
author = {Horák, Kryštof and de la Hera, Iván and PerézandRiguero, Jose and Javier Rojo, Francisco and Tomášek, Oldřich and Kauzál, Ondřej and Albrecht, Tomáš},
booktitle = {14th European Ornithologists' Union Congress},
keywords = {wing feathers; mechanical properties of feather; tail feathers; songbirds; feather growth rate; feather stiffness},
language = {eng},
title = {A trade off between feather growth rate and feather stiffness in tropical and temperate songbirds},
url = {https://www.eou2023.event.lu.se/start},
year = {2023}
}
TY - CONF
ID - 2311737
AU - Horák, Kryštof - de la Hera, Iván - Peréz-Riguero, Jose - Javier Rojo, Francisco - Tomášek, Oldřich - Kauzál, Ondřej - Albrecht, Tomáš
PY - 2023
TI - A trade off between feather growth rate and feather stiffness in tropical and temperate songbirds
KW - wing feathers
KW - mechanical properties of feather
KW - tail feathers
KW - songbirds
KW - feather growth rate
KW - feather stiffness
UR - https://www.eou2023.event.lu.se/start
N2 - The bird feather is the most complicated skin derivative in vertebrates. It has a essential function in thermoregulation, colouration, mate or flight. Above all, the quality and mechanical properties of the feather are essential for its flight capabilities. Mechanical properties of the feather can be measured relatively easily using a bending test under laboratory conditions. Combined with measurements of the growth rate of the feather, this information gives us insight into the specific trade off between feather growth rate and mechanical properties of feathers. In this study, we compare the stiffness and growth rate of wing feathers in a dataset of 394 individuals of 129 songbird species from temperate and tropical zones (Czech Republic, Cameroon). The species included in the analysis differ significantly in their migratory behaviour, with resident species, short- and long-distance migrants that overflying thousands of kilometres in their annual migratory journey being represented. All tropical species, on the other hand, are sedentary, which offers an interesting comparison allowing to reveal differences in investment in feathers between tropical and temperate songbird species. As expected, the results confirmed that species with longer migration distances exhibit stiffer feathers. After filtering out the effect of migration distance, tropical species exhibit lower feather stiffness compared to their temperate relatives, as well as faster flight growth. This may point to a specific adaptation of tropical bird species, which need to have fast-growing wing feathers at the expense of their mechanical properties.
ER -
HORÁK, Kryštof, Iván DE LA HERA, Jose PERÉZ-RIGUERO, Francisco JAVIER ROJO, Oldřich TOMÁŠEK, Ondřej KAUZÁL a Tomáš ALBRECHT. A trade off between feather growth rate and feather stiffness in tropical and temperate songbirds. In \textit{14th European Ornithologists' Union Congress}. 2023.
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