The Long-tailed Jaeger (Stercorarius longicaudus) breeds in high Artic, and winters in south Atlantic and southeast Pacific oceans. Is found near coasts. Matures are 38 cm (15 inches) in height and 300 g in weight.
In winter, feathers of cap and mantle are dusky, edged with pale grayish. Crissum and upper tail-coverts barred with black and white. In breeding, cap blackish, and sides of head washed with yellow. Nuchal collar and underparts white. Bill dusky, legs pale blue, and feet white. Feeds on grasshoppers and fishes.