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BIRDS OF COLORADO. 
Page 156. 160. Somateria dresseri. American Eider. 
Further research has shown that, the specimen mentioned at 
the capitol at Denver was taken outside of Colorado. 
Page 162. 418a. Phalaenoptilus nuttallii nitidus. Frosted 
Poor will. 
The two specimens taken by Mr. Aiken have been later 
identified as true nuttallii. 
Page 167. 595. Zamelodia ludoviciana. Rose breasted 
Grosbeak. 
Page 168. 647. Helminthophila peregrina. Tennessee 
Warbler. 
This is now withdrawn from the list of Colorado breeders 
since Mr. Aiken lias satisfied himself that the record is a mis- 
identification for Virginia’s Warbler. 
ADDENDUM. 
While the last pages of this bulletin are passing through 
the press, the Auk for July, 1900, is received, necessitating the 
following addition : 
Page 186. Add. Aiken, C. E. Seven New Birds for Colorado. 
Auk , XVII. 1900, p. 298. 
Adds to the Colorado list, Gavia arctica, Ardea egretta , Syrnium nebu- 
losum, Astragalinus tristis pallidus, Geothlypis agilis, Geothlypis trichas, 
Wilsonia canadensis. 
The records of these birds for Colorado have been given in 
this bulletin, but since the article in the Auk was published first, 
it becomes the first record of these birds for Colorado, instead of 
this bulletin. 
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