CHECK-LIST OF COLORADO BIRDS 341 



675a. Grinnell's water thrush. SEIURUS NOVEBORACENSIS 

 NOTABILIS. Rare migrant ; appearing from plains to 8,000 

 feet. 



678. Connecticut warbler. GEOTHLYPIS AGILIS. Rare 

 or accidental migrant ; one record by Mr. Aiken. 



680. Macgillivray's warbler. GEOTHLYPIS TOLMIEI. 

 Common summer resident ; breeds from base of foothills 

 to 9,000 feet. 



681. Maryland yellow-throat. GEOTHLYPIS TRICHAS. 

 One taken at Colorado Springs by Mr. Aiken. 



68 la. Western yellow-throat. GEOTHLYPIS TRICHAS 

 OCCIDENTALS. Common summer resident, almost restricted 

 to the plains ; both sides of the range. 



683. Yellow-breasted chat. ICTERIA VIRENS. Acci- 

 dental summer visitor. 



683a. Long-tailed chat. ICTERIA VIRENS LONGICAUDA. 

 Common summer resident ; scarcely found in the moun- 

 tains, but frequent in the lower foothills and on the plains ; 

 never seen above 8,000 feet. 



685. Wilson's warbler. WILSONIA PUSILLA. Abundant 

 summer resident ; centre of abundance in breeding season, 

 11,000 feet; known to breed at 12,000 feet ; also as low 

 as 6,000. 



68 5a. Pileolated warbler. WILSONIA PUSILLA PILEOLATA. 

 Summer resident ; not uncommon ; Mr. Aiken thinks it as 

 plentiful as preceding. 



686. Canadian warbler. WILSONIA CANADENSIS. Rare 

 or accidental migrant ; one record by Mr. Aiken. 



687. American redstart. SETOPHAGA RUTICILLA. Sum- 

 mer resident ; not uncommon in eastern, rare in western, 

 Colorado ; breeds below 8,000 feet. 



