skua

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skua:

see jaegerjaeger
, common name for several members of the family Stercorariidae, member of a family of hawklike sea birds closely related to the gull and the tern. The skua is also a member of this family.
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skua

any predatory gull-like bird of the family Stercorariidae, such as the great skua or bonxie (Stercorarius skua) or arctic skua (S. parasiticus) both of which harass terns or gulls into dropping or disgorging fish they have caught