Any types of gull of this genus Stercorarius. Three types occur from the Atlantic coast. The jagers pursue various other species of gulls and force them to disgorge their particular prey. The 2 center end feathers are usually decidedly longer than the remainder. Called additionally boatswain, and marline-spike bird. Title can be put on the skua, or Arctic gull (Megalestris skua).
Any bird of the family Laridæ and subfamily Ster-corariinæ or Lestridinæ, as a skua-gull, arctic-bird, dirty-allen, or dung-hunter.