10.5061/DRYAD.T78400R
Briedis, Martins
Swiss Ornithological Institute
Bauer, Silke
Swiss Ornithological Institute
Adamik, Peter
Palacký University, Olomouc
Alves, José A.
University of Aveiro
Costa, Joana S.
University of Aveiro
Emmenegger, Tamara
Swiss Ornithological Institute
Gustafsson, Lars
Uppsala University
Koleček, Jaroslav
Academy of Sciences of the Czech Republic
Liechti, Felix
Swiss Ornithological Institute
Meier, Christoph M.
Swiss Ornithological Institute
Prochazka, Petr
Academy of Sciences of the Czech Republic
Hahn, Steffen
Swiss Ornithological Institute
Data from: A full annual perspective on sex-biased migration timing in
long-distance migratory birds
Dryad
dataset
2019
long-distance migrant
Ficedula albicollis
Ficedula hypoleuca
Merops apiaster
Upupa epops
Lanius collurio
Apus apus
Acrocephalus arundinaceus
Ficedula semitorquata
Hirundo rustica
protandry
Cuculus canorus
Coracias garrulus
Tachymarptis melba
Oenanthe oenanthe
Riparia riparia
migration phenology
geolocator
2019-01-31T17:51:38Z
2019-01-31T17:51:38Z
en
https://doi.org/10.1098/rspb.2018.2821
69286 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
In many taxa, the most common form of sex-biased migration timing is
protandry – the earlier arrival of males at breeding areas. Here we test
this concept across the annual cycle of long-distance migratory birds.
Using more than 350 migration tracks of small-bodied trans-Saharan
migrants, we quantify differences in male and female migration schedules
and test for proximate determinants of sex-specific timing. In spring,
males on average departed from the African non-breeding sites about 3 days
earlier and reached breeding sites ca. 4 days ahead of females. In autumn,
males started migration about 2 days earlier, but this difference did not
carry-over to arrival at the non-breeding sites. A cross-species
comparison revealed large variation in the level of protandry and
protogyny across the annual cycle. While we found tight links between
individual timing of departure and arrival within each migration season,
only for males the timing of spring migration was linked to the timing of
previous autumn migration. In conclusion, our results demonstrate that
protandry is not exclusively a reproductive strategy but rather occurs
year-round and the two main proximate determinants for the magnitude of
sex-biased arrival times in autumn and spring are sex-specific differences
in departure timing and migration duration.
Sex-biased migration timing in 14 Afro-Palearctic migratory
birdsdatabase_submission.csv
Europe
Africa