Pomarine Jaeger
NamePomarine Jaeger
Common NamePomarine Jaeger
Scientific NameStercorarius pomarinus
FamilyStercorariidae
Wingspan (cm)117.5
Length (cm)50.5
Weight (g)730
Plumage DetailsAdult light morphs have dark brown upperparts, a dark cap, yellowish cheeks and nape, and white underparts with a dark breast band and flanks. Dark morphs are uniformly dark brown. Juveniles are typically barred brown.
Vocalization / CallGenerally silent at sea, but on breeding grounds, they emit harsh, guttural 'kyow' or 'kya-kya-kya' calls, and a distinctive 'whee-whee-whee' display call.
Primary Dietomnivore
Primary Habitatstundra, coastal
Conservation Statusleast-concern
Geographic RangeBreeds in the circumpolar Arctic tundra of North America and Eurasia. Migrates to tropical and temperate oceans worldwide during the non-breeding season, ranging across the Atlantic, Pacific, and Indian Oceans.
Identifying FeaturesTwisted, spoon-shaped central tail feathers (in adults), Robust build, Dark cap and yellowish cheeks (light morphs), White belly with dark breast band (light morphs), Strong, direct flight, Kleptoparasitic behavior
Description
The Pomarine Jaeger is a robust, medium-sized seabird known for its predatory and kleptoparasitic habits. It breeds in the Arctic tundra and spends its non-breeding season far out at sea, often seen harassing other seabirds to steal their catch.
