Range.--The Arctic regions, south in winter to Alaska, Greenland, northern Europe and Asia. This beautiful bird is the most rare of all the Gulls, being very difficult to obtain because of its extreme northerly distribution. It is in form and plumage like Bonaparte Gull, with the exceptions that the head is white, there being a narrow black collar around the neck, the tail is wedge shaped, and the whole under parts from the chin to the tail are rosy in the breeding plumage. The nests and eggs remain still undiscovered, although Nansen, in August 1896, found a supposed breeding ground in Franz Josef Land, because of the numbers of the birds, but found no nests. 62. SABINE'S GULL. _Xema sabinii._ Range.--Arctic regions, breeding from Alaska and Greenland and northward, and wintering south to New England. A handsome bird, having the slaty hood bordered behind with a black ring, the primaries black, white tipped, and the tail slightly forked. They breed abundantly on the marshes of northern Alaska and Greenland, nesting the same as others of the species. The two or three eggs are laid in June. They are greenish brown in color and are marked with dark brown. Size 1.75 × 1.25. Data.--Hudson Bay, August 1, 1894. Eggs laid on the ground in the moss; no nest except the hollow in the moss. [Illustration 051: Rose Gull. Sabine Gull.] [Illustration: Greenish brown.] [Illustration: deco.] [Illustration: right hand margin.] Page 50 63. GULL-BILLED TERN. _Gelochelidon nilotica._ Range.--Found in North America along the Gulf Coast and on the Atlantic Coast north to Virginia and casually farther. This is one of the largest of the Terns, is 14 inches long, has a short, thick, black bill and a short slightly forked tail; the crown is black, mantle pearly gray, white below. This species is very widely distributed, being found in Europe, Australia, Asia and Africa. They are known locally as "Marsh Terns" where they breed in immense numbers on some of the marshes about the Gulf, particularly in Texas. They also breed on many of the islands along the Coast, rarely making any nest, but laying the eggs in a hollow in the sand. They nest most abundantly in the latter part of May, generally laying three eggs. They are of a yellowish, grayish or greenish buff color and are spotted with brown and lilac. Size 1.80 × 1.30. Data.--Northampton Co., Va., May 28, 1882. Three eggs laid on a mass of seaweed on marsh above tide water. 64. CASPIAN TERN. _Sterna caspia._ Range.--Like the preceding species, this bird is nearly cosmopolitan in its range, in North America breeding from the Gulf Coast and Texas northward to the Arctic Regions.