64 KKV 'i'O TIIIC \\A'n:R r.IRDS ()|- I'LORIDA. 



STERNA F0R5TERI Xnft. 

 Forster's Tern. 



. \ if lilt ill sii//i//icr: Crown black : upper parts pearl L!.rav : 

 under parts white: inner web of outer tail feather 

 darker than outer web ; bill reddish orange tipped with 

 black : feet yellowish. . h/ii/t in winter : V>\\\ dark brown : 

 feet brown : head f;rayish ; a dusky black patch on sides 

 of the head, enclosin.ii,' the eye. Iinniainre in winter : 

 \ Upper parts mottled with pale brown or buff. 



Length. 15: Wing. 10.25; Tail, 6.60; Tarsus, .90: Hill. 

 1.50. 



The range of Forster's Tern extends nearly 

 tliroughout North America. It is common in winter in Florida, both on the 

 east and west coast. It breeds commonly on Cobb's Island, \\\. : the eggs 

 are two to three in ninnber, nsualh' laid on the sand : they are pale butt or 

 greenish gra\" marked with dark brown. 



STERNA HI RUN DO //////. 

 Common Tern. Mackerel "Gull. 



Aiiiilt in summer: Bill red, broadly tipped with l)lack: feet red: crown black: upper parts 

 pearl gray; under parts pale ashy gr.iy. . Idii/t in winter : l''orehead and crown white or grayish 

 white : under parts white. Immature siiecimens ha\e the up]ier parts mottled with buff or pale 

 brown. The outer web of outer tail feather is darker than the inner web at all seasons. 



