lis The Wilson Bulletin— No. 100 



phase of our native bird life is certain to be seen. Further- 

 more, the writer urges the bird lover who is not very familiar 

 with western birds, to visit the Colorado Museum of Natural 

 History (in City Park) where are to be found comprehen- 

 sive and graphic illustrations of a large number of Colo- 

 rado birds, in the mounted specimens and groups displayed 

 in the Museum rooms. 



In trying to give some idea as to the relative abundance of 

 the different species, the writer has done so in comparative 

 terms only. In such matters the chances of experience and 

 the personal equation cannot fail to enter, hence the terms 

 used to qualify a bird's abundance are largely relative, and 

 must be taken as such, and as such only. 



1. Stercnrariiis parasiticus — Parasitic Jaeger. Cooke; by Smith, 

 1889. 



2. Lams argentatus — Herring Gull. Cooke; by Smith, 1883. 



3. Lams atricilla — Laughing Gull. Cooke; by Smith, 1889. 



4. Larus philadelpliia — Bonaparte's Gull. Cooke. 



5. Xema sahini — Sabine's Gull. Cooke. 



6. Phalacrocorax vigua mexicamis — Mexican Cormorant. Cooke; 

 by Felger. 



7. Pelecaniis erythrorhynclios — White Pelican. A flock of more 

 than forty seen flying over Montclair June 14, 1913. 



8. Anas platyrliynchos — Mallard. Common during migration in 

 all the park lakes, and in wet places of the outskirts; also along 

 the Platte. Probably breeds with the domesticated species in City 

 Park. Arrives in the late winter months, as soon as there is 

 open water, i.e. February. 



9. CJiaulelasmus streperiis — Gadwall. Not infrequent in Wash- 

 ington and City Parks during migration. Arrives a little after the 

 mallard. 



10. Mareca americana — Baldpate. Noted in City Park, Wash- 

 ington Park, and University Park, as a migrant. Arrives about 

 the middle of March, and reappears the last week in October. 



11. Nettion carolinense — Green-wing Teal. Seen in Washington 

 Park, October 17, 1896. 



12. Querquedula discors — Blue-wing Teal. Noted in City Park, 

 February 4, 1916, and April 24, 1917. 



13. Spatula clypeata — Shoveller. Fairly common in the various 

 park lakes and flood-water areas in the outskirts during migration; 

 seen from March 18 to June 16, and as early as September 26. Be- 

 comes very tame in City Park lakes, if undisturbed. 



