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Brief #
Grey back, dark primary wing feathers, black cap and very long tail.
Description #
unmistakable as an adult, with grey back, dark primary wing feathers without a white "flash", black cap and very long tail. Adults often hover over their breeding territories. Juveniles are much more problematic, and are difficult to separate from parasitic jaeger over the sea. They are slimmer, longer-winged and more tern-like than that species, but show the same wide range of plumage variation. However, they are usually colder toned than Arctic, with greyer shades, rather than brown.
Measurements #
Length: 41 - 46 cm
Wingspan: 1.05 - 1.17 m
Weight: 240 - 350 g
Gallery #
