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 blotcned with blackish on wings and tail.

Nest. - The 2 or 3 buffy, spotted eggs are laid in hollows in the sand. Size 2.60 x1.75.

Rangs. - Breeds locally along the South Atlantic coast and in the interior to Great Slave Lake.