38. Stercorarius longicaudus. 21 in.

Like the last species, but with the pointed central tail feathers projecting 8 or 10 in. and with a shorter bill (1.15 in.) and the nostril about midway of its length. It is less often found in the dark phase.

Notes. - Shrill wailing whistles.

Nest. - Nest and eggs like those of the Pomarine Jaeger.

Range. - Arctic regions, wintering south to Florida.