Migration Ecology of Avian Species

Migration ecology of birds examines the seasonal movements of avian species between breeding and non-breeding areas, integrating physiological, behavioural and environmental factors that shape these journeys. This field addresses how individuals navigate vast distances, optimise energy expenditure and respond to dynamic atmospheric conditions. Key themes include the role of intrinsic factors such as age, experience and social learning in refining migratory routes, as well as extrinsic influences of wind regimes, thermal structure and landscape features on flight performance. Advances in GPS telemetry, remote-sensing annotation systems and bio-logging have transformed our capacity to resolve fine-scale movement trajectories in relation to weather and topography. Understanding migration ecology is critical not only for elucidating the mechanisms of long-distance movement, but also for informing global conservation strategies, predicting the impacts of climate change on migratory connectivity and mitigating risks posed by anthropogenic barriers such as wind farms and habitat fragmentation.

Research from Nature Portfolio

Recent foundational studies have revealed how life history stage and social knowledge drive migratory agility and adaptability. Work on large soaring birds demonstrates that adult individuals outperform juveniles when exploiting fine-scale thermal updrafts under challenging wind shear, indicating that ontogenetic improvement in flight control substantially reduces travel time and energy use. In parallel, research on a long-lived social crane species shows that groups containing older, experienced birds pioneer novel overwintering routes closer to breeding grounds, leading to rapid population-level shifts in migratory patterns when environmental conditions change. These insights highlight the critical influence of age structure and collective learning on the capacity of migratory populations to adjust behaviour in response to global change.

Migration Ecology of Avian Species publication trend

The graph below shows the total number of articles in migration ecology of avian species across all publications each year (not limited to Nature Index journals).

Technical terms

Thermal updraft: A column of rising warm air generated by surface heating, which soaring birds exploit to gain altitude without flapping.

Wind support: The component of horizontal wind aligned with the bird’s flight direction, which can increase ground speed and reduce energy expenditure.

Ontogeny of migration: The developmental process by which individual birds refine migratory behaviour and route knowledge over successive journeys.

Realised energy landscape: The actual spatial distribution of energetic costs and gains experienced by an individual, shaped by its physiological state and environmental conditions.

Migratory connectivity: The degree to which individuals from specific breeding areas remain associated in the same non-breeding locations, influencing population structure and conservation planning.

References

1. The environmental-data automated track annotation (Env-DATA) system: linking animal tracks with environmental data. Movement Ecology (2013).
2. Adult vultures outperform juveniles in challenging thermal soaring conditions. Scientific Reports (2016).
3. Experience drives innovation of new migration patterns of whooping cranes in response to global change. Nature Communications (2016).
4. Developmental stage shapes the realized energy landscape for a flight specialist.. eLife (2024).
5. Soaring over open waters: horizontal winds provide lift to soaring migrants in weak thermal conditions. Movement Ecology (2023).