TERNS. 119 



83. LEAST TERN. 



Our smallest Tern, 9; entire upper parts 

 including tail, pale pearl-gray; top of head 

 (excepting lunette on forehead), and two 



Fig. 87 



Roseate Tern Young. 1-10. 



outer primaries black; white beneath; bill, 

 yellow black at extreme tip, fig. -88-89; feet, 

 yellow; in winter, white of lunette , more ex- 

 tended. Young with a patch of dusky on 

 wing and V-shaped marks of dusky on back; 

 tail not as deeply forked. Beeds from south 

 shore of Mass, (formerly Ipswich), south- 

 ward from late May (Bahamas) to early 

 July (Mass.) South in Sept., north in *JLzy 



