CABOT'S TERN 



Sexes alike. Adults. Head somewhat 

 crested; crown, crest and hindneck black; back, 

 scapulars and wings pale gray, tail pale gray, 

 rest of plumage white; bill reddish orange; feet 

 black. In fall and winter forehead and more or 

 less of crown white or partly white. Tail long 

 and considerably forked. 



Young. Similar to winter adults but more or 

 less spotted with dusky above; tail shorter and 

 less forked. 



A migrant, common about the harbor and bay 

 near Panama City. 



4. Sterna sandvicensis acuflavida (Cabot) 

 Cabot's Tern 



Thalasseus sandvicensis acuflavidus RIDGWAY, Birds of 

 N. and M. Amer., VIII, p. 476, 1919. 



Length 406 mm. (16.00 in.) ; tail I28.mm. (5.00 

 in.). 



Sexes alike. Adult. Top of head and crest 

 black, back and wings light pearl gray; rest of 

 plumage white. Bill black with the tip yellow- 

 ish; feet black. In fall and winter the crown is 

 largely white. Tail long, considerably forked. 



Young. Similar but back spotted with black- 

 ish; tail shorter and less forked. Yellow tip 

 to bill inconspicuous or wanting. 



A migrant. Several individuals seen sitting on 

 a floating log on Panama Bay, March 13, 1926. 

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