Ecology and Movement Patterns of Sea Ducks

Sea ducks comprise a diverse group of diving waterfowl that occupy coastal, estuarine and inland habitats across the Northern Hemisphere. Their ecology is shaped by unique physiological adaptations for deep diving, specialised diets of benthic invertebrates and seasonally dynamic energy requirements. Breeding typically takes place in high-latitude freshwater wetlands where individuals invest heavily in nest site fidelity and plumage moult before embarking on long-distance migrations. Movement patterns encompass discrete staging areas, post-breeding moulting sites and wintering grounds that vary in salinity, temperature and resource availability. Multi-species tracking studies reveal both overlap and partitioning in habitat use, reflecting a balance between competition and the pursuit of energetically profitable foraging patches. Population structure is influenced by juvenile dispersal, adult site fidelity and episodic movements that underpin genetic connectivity. Understanding these patterns is vital for conservation, as sea ducks face threats from climate-driven habitat change, contaminant exposure and disturbance from maritime activities. Advances in telemetry, remote sensing and modelling now allow researchers to map critical habitats year-round, informing adaptive management and designation of marine protected areas.

Research from Nature Portfolio

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Ecology and Movement Patterns of Sea Ducks publication trend

The graph below shows the total number of articles in ecology and movement patterns of sea ducks across all publications each year (not limited to Nature Index journals).

Technical terms

Site fidelity: The tendency of individuals to return to and remain within a previously used area across seasons or years.

Staging grounds: Discrete locations where migratory birds congregate temporarily to rest and refuel between breeding and wintering periods.

Telemetry: The use of remote tracking devices to record and transmit data on animal movements and behaviour.

Habitat partitioning: The process by which coexisting species or populations utilise different habitat features or resources to reduce competition.

References

1. Assessing year‐round habitat use by migratory sea ducks in a multi‐species context reveals seasonal variation in habitat selection and partitioning. Ecography (2020).
2. Dispersal of juvenile Barrow’s goldeneyes (Bucephala islandica) mirrors that of breeding adults. Movement Ecology (2023).
3. Case report: first data on the foraging behaviour of velvet scoters (Melanitta fusca) in soft-bottom coastal waters of the southeast Baltic Sea. Animal Biotelemetry (2023).