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Remarks (This species is to be)

This species is to be distinguished from the two following by its larger size and the rounded ends of its central tail-feathers. Range." Resident during the summer in high northern latitudes, chiefly within the Arctic Circle, and extending from Siberia in eastern Asia entirely around the zone" (B., B., and R.). Migrates southward along the Atlantic JAEGERS AND SKUAS. coast, and more rarely through the Great Lakes, and winters from Long Island southward.

Long Island, regular from June 15 to Oct. 30. Sing Sing, A. V. Nest, on the ground. Eggs, two to three, deep olive-drab sparingly spotted with slate color, and light and dark raw-umber markings and black dots, chiefly at the larger end, where they become confluent, 2-25 × 1.70 (Brewer). 37. Stercorarius parasiticus (Linn.). PARASITIC JAEGER (see Fig. 6, a). Ad., light phase. --Back, wings, and tail slaty fuscous; top of the head and lores nearly black; sides of the head and back of the neck strawyellow, this color sometimes spreading down the sides of the neck and on the throat; breast and belly white; sides of the breast, flanks, lower belly, and crissum slaty fuscous; tarsi and feet (in dried specimens) black; middle tail-feathers pointed and extending about 3.00 beyond the others. Ad., dark phase. Entire plumage dark, slaty brown, darker on the top of the head; under parts slightly lighter; sometimes a trace of straw-yellow on the sides and back of the neck; tarsi, feet, and tail as in the preceding. Im., light phase. Upper parts, wings, and tail fuscous; the feathers of the back, neck, and head more or less bordered, tipped, or barred with buffy; hind-neck and head sometimes buffy, streaked or barred with fuscous, and varying from this color to plain fuscous; longer, lateral upper tail-coverts barred with buffy; tail buffy, whitish at the base; under wing-coverts barred with buffy; under parts white, washed with buffy, and irregularly barred with sooty fuscous; these bars sometimes very numerous when the under parts looked as if washed with sooty fuscous; again, they may be less numerous and confined to the breast and sides, leaving the belly white; central tail-feathers pointed, projecting more or less beyond the rest. Im., dark phase.-Sooty fuscous, the feathers, particularly on the under parts, more or less marked with ochraceous-buff. L., 17.00; W., 13.00: T., Ad., 8.60, Im., 6·40; B., 1.15.