64. Caspian Tern (Sterna caspia). L. 21. T. 6., 
forked 1.5. Largest of our Terns. Ads., breeding. 
Bill red; cap black; above pearl; below white; przmarzes 
frosty black. After breeding, crown_streaked black and 
white; bill more orange. Yung. Similar to last but 
wings and tail with blackish. Notes. A loud, harsh 
“‘hay-awh’’ or ‘‘key-rak.’? 
Range.—Cosmopolitan; breeds in North America, locally from 
Texas to Newfoundland and Great Slave Lake; winters mostly south 
of United States; three California winter records. 
65. Royal Tern (Sterna maxima). L. 19; T. 7, fork- 
ed 3.5; B. 2.5. Ads., summer. Primaries frosty black, 
white on inner two-thirds of inner web except at tip, 
where frosty; bill orange red; crown black; above pearl; 
below white. Ads., winter. The same, but head 
white with black streaks. Yug. Similar to winter ad. 
but wings and tail with grayish. 
Range.—Middle America; breeds from southern Brazil and Peru to 
Gulf States, Virginia, and California; wanders north to Great 
Lakes and Massachusetts; winters from Gulf States and California 
southward. 
66. Elegant Tern (Sterna elegans). L. 16.5; B. 2.7. 
Similar to No. 65, but smaller; bill longer and more 
slender. Ads. Tinged with shell pink below. 
ee ge.—''Pacific coast of America from California to Chill.’”’ (A. 
.U.) : 
67. Cabot Tern (Sterna sandvicensis acuflavida). 
L. 16; T. 5-5, forked 2.7. Ads., breeding. Bill black, 
the tip yellow; crown black; above pearl; below white; 
primaries much as in No. 65. After breeding, head 
white; nape with black streaks. Yug. © Similar to 
last but with back and tail with blackish; tip of bill 
less yellow. 
Range.—Tropical America; breeds on east side of Mexico north 
along Gulf Coast to Florida, and Atlantic coast to South Carolina; 
wanders to Massachusetts; winters south of United States to West 
Indies and Central America. +s . 
57 
Terns. 
