ArticleMovement ecology2021
A partial migrant relies upon a range-wide cue set but uses population-specific weighting for migratory timing.
Article in Movement ecology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Divergent climate impacts despite similar response to temperature in a widespread aerial insectivore.bioRxiv : the preprint server for biology · 2025Article
- Combining Individual-Based Radio-Tracking With Whole-Genome Sequencing Data Reveals Candidate for Genetic Basis of Partial Migration in a Songbird.Ecology and evolution · 2025Article
- Migratory lifestyle carries no added overall energy cost in a partial migratory songbird.Nature ecology & evolution · 2024Article
- Temperature and microclimate refugia use influence migratory timings of a threatened grassland bird.Movement ecology · 2023Article
- A songbird adjusts its heart rate and body temperature in response to season and fluctuating daily conditions.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2021Article
Corrections and comments
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Authors and funding
12 authors.
Funding
Abstract
backgroundMany birds species range over vast geographic regions and migrate seasonally between their breeding and overwintering sites. Deciding when to depart for migration is one of the most consequential life-history decisions an individual may make. However, it is still not fully understood which environmental cues are used to time the onset of migration and to what extent their relative importance differs across a range of migratory strategies. We focus on departure decisions of a songbird, the Eurasian blackbird Turdus merula, in which selected Russian and Polish populations are full migrants which travel relatively long-distances, whereas Finnish and German populations exhibit partial migration with shorter migration distances.
methodsWe used telemetry data from the four populations (610 individuals) to determine which environmental cues individuals from each population use to initiate their autumn migration.
resultsWhen departing, individuals in all populations selected nights with high atmospheric pressure and minimal cloud cover. Fully migratory populations departed earlier in autumn, at longer day length, at higher ambient temperatures, and during nights with higher relative atmospheric pressure and more supportive winds than partial migrants; however, they did not depart in higher synchrony. Thus, while all studied populations used the same environmental cues, they used population-specific and locally tuned thresholds to determine the day of departure.
conclusionsOur data support the idea that migratory timing is controlled by general, species-wide mechanisms, but fine-tuned thresholds in response to local conditions.
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