Evidence map›Paper›PMID 30349724›Full record

ArticleMovement ecology2018

Ten grams and 13,000 km on the wing - route choice in willow warblers

Kristaps Sokolovskis, Giuseppe Bianco, Mikkel Willemoes, Diana Solovyeva, Staffan Bensch, Susanne Åkesson

Abstract read
In one paragraph

Article in Movement ecology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing 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

14 citing papers in PubMed.

  1. Article
  2. 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
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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

6 authors.

Kristaps Sokolovskis1Department of Biology, Center for Animal Movement Research, Lund University, Ecology Building, 223 62 Lund, SE Sweden.
Giuseppe Bianco1Department of Biology, Center for Animal Movement Research, Lund University, Ecology Building, 223 62 Lund, SE Sweden.
Mikkel Willemoes1Department of Biology, Center for Animal Movement Research, Lund University, Ecology Building, 223 62 Lund, SE Sweden.
Diana SolovyevaInstitute of Biological Problems in the North, Magadan, Russia.
Staffan Bensch1Department of Biology, Center for Animal Movement Research, Lund University, Ecology Building, 223 62 Lund, SE Sweden.
Susanne Åkesson1Department of Biology, Center for Animal Movement Research, Lund University, Ecology Building, 223 62 Lund, SE Sweden.ORCID 0000-0001-9039-2180

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundHigh-latitude bird migration has evolved after the last glaciation, in less than 10,000-15,000 years. Migrating songbirds rely on an endogenous migratory program, encoding timing, fueling, and routes, but it is still unknown which compass mechanism they use on migration. We used geolocators to track the migration of willow warblers (

resultsThe three tracked males were very similar in the routes they took to their final wintering sites in southern Tanzania or northern Mozambique, in their use of stopover sites and in the overall timing of migration. None of the tested compass mechanisms could explain the birds' routes to the first stopover area in southwest Asia or to the destination in Southeast Africa without modifications. Our compass mechanism simulations suggest that the simplest scenarios congruent with the observed routes are based on either an inclination or a sun compass, assuming two sequential steps.

conclusionsThe birds may follow a magnetoclinic route coinciding closely with the tracks by first moving west, i.e. closer to the goal, and thereafter follow a constant apparent angle of inclination to the stopover site. An alternative would be to use the sun compass, but with time-adjustments along the initial part of the migration to the first stopover, and thereafter depart along a new course to the winter destination. A combination of the two mechanisms cannot be ruled out, but needs to be confirmed in future studies.

Indexed as

Bird migrationCompass orientationRange expansionRoute simulations

Identifiers

PMID30349724
PMCPMC6191995

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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.