ArticleMovement ecology2021
Spatial structure in migration routes maintained despite regional convergence among eastern populations of Swainson's Thrushes.
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 4 papers.
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Who cites it
4 citing papers in PubMed.
- Age-related differences in fall migration timing and performance of juvenile and adult Wood Thrushes departing from a breeding site.Movement ecology · 2025Article
- A synthesis of recent tools and perspectives in migratory connectivity studies.Movement ecology · 2023Review
- Songbirds initiate migratory flights synchronously relative to civil dusk.Movement ecology · 2023Article
- Where did the finch go? Insights from radio telemetry of the medium ground finch (Ecology and evolution · 2022Article
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundMigratory connectivity links the different populations across the full cycle and across the species range and may lead to differences in survival among populations. Studies on spatial and temporal migratory connectivity along migration routes are rare, especially for small migratory animals.
methodsWe used an automated radio-telemetry array to assess migratory connectivity en route and between early and later stages of the fall migration of the eastern populations of Swainson's Thrush, and to assess the variation of migration pace between consecutive detection from the different receiving stations along the migratory journey. We tracked 241 individuals from across eastern Canada to determine if populations were mixing around the Gulf of Mexico. We also tested the influence of tagging longitude, latitude and age on migration pace.
resultsMigration routes varied and converged towards the northeast coast of the Gulf of Mexico, but in this region, populations maintained finer-scale spatial structure. Migration pace increased as birds progressed south, independent of age and tagging site.
conclusionsWe showed that for songbirds, migratory connectivity can be maintained at fine spatial scales despite the regional convergence of populations, highlighting the importance of detailed spatial tracking for identification of population specific migration routes. Overall, our study provides a portrait of migratory movements of eastern Swainson's Thrush and a framework for understanding spatial structure in migration routes for other species.
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