Evidence map›Paper›PMID 30963841›Full record

ArticleProceedings. Biological sciences2019

A full annual perspective on sex-biased migration timing in long-distance migratory birds.

Martins Briedis, Silke Bauer, Peter Adamík, José A Alves, Joana S Costa, Tamara Emmenegger, Lars Gustafsson, Jaroslav Koleček, Felix Liechti, Christoph M Meier and 2 more

Abstract read
In one paragraph

Article in Proceedings. Biological sciences, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

28 citing papers in PubMed.

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  18. Connectivity between countries established by landbirds and raptors migrating along the African-Eurasian flyway.Conservation biology : the journal of the Society for Conservation Biology · 2023
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors.

Martins Briedis1 Department of Bird Migration, Swiss Ornithological Institute , Sempach , Switzerland.
Silke Bauer1 Department of Bird Migration, Swiss Ornithological Institute , Sempach , Switzerland.
Peter Adamík2 Department of Zoology, Palacký University , Olomouc , Czech Republic.
José A Alves4 Department of Biology and Centre for Environmental and Marine Studies (CESAM), University of Aveiro , Aveiro , Portugal.
Joana S Costa4 Department of Biology and Centre for Environmental and Marine Studies (CESAM), University of Aveiro , Aveiro , Portugal.
Tamara Emmenegger1 Department of Bird Migration, Swiss Ornithological Institute , Sempach , Switzerland.
Lars Gustafsson6 Department of Animal Ecology/Ecology and Genetics, Uppsala University , Uppsala , Sweden.
Jaroslav Koleček7 Institute of Vertebrate Biology, The Czech Academy of Sciences , Brno , Czech Republic.
Felix Liechti1 Department of Bird Migration, Swiss Ornithological Institute , Sempach , Switzerland.
Christoph M Meier1 Department of Bird Migration, Swiss Ornithological Institute , Sempach , Switzerland.
Petr Procházka7 Institute of Vertebrate Biology, The Czech Academy of Sciences , Brno , Czech Republic.
Steffen Hahn1 Department of Bird Migration, Swiss Ornithological Institute , Sempach , Switzerland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

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 autumn, males started migration about 2 days earlier, but this difference did not carry over to arrival at the non-breeding sites. 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. 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.

Indexed as

Animal MigrationAfrica, NorthernAnimalsBirdsEuropeFemaleMaleReproductionSeasonsSex FactorsSongbirdsannual cyclegeolocatorlong-distance migrantmigration phenologyprotandryprotogyny

Identifiers

PMID30963841
PMCPMC6408886

What OpenQuestion holds

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Read underepoch 390

Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.