CASPIAN TERN

64. Sterna caspia. 21 in.

Largest of our terns. Bill heavy and bright red; head crested; tail forked about 1.5 in.; eyes brown. Adults in summer have the crown and occipital crest glossy black. Winter adults and young birds have the crown mixed with white, and the latter are also blotched with blackish on wings and tail.

Nest.—The 2 or 3 buffy, spotted eggs are laid in hollows in the sand. Size 2.60 × 1.75.

Range.—Breeds locally along the South Atlantic coast and in the interior to Great Slave Lake.

ROYAL TERN

65. Sterna maxima. 19 in.

Similar to the last, but smaller; bill more slender; tail forked 3.5 in.

Nest.—A hollow in the sand. The 2 or 3 eggs are creamy buff, with distinct blackish-brown spots (2.60 × 1.70).

Range.—Breeds in the Gulf States and north to Virginia and Calif.; winters south of the U. S.