FURTHER NOTES 
ON 
THE BIRDS OF COLORADO. 
BY W. W. COOKE. 
On the publication in March, 1897, of Bulletin No. 37 of 
this Station, entitled “The Birds of Colorado,” the author re- 
ceived many letters containing additional notes. These led to 
quite an extensive correspondence and iu several cases the ex- 
amination or re-examination of large series of specimens. In 
addition the present writer has had a chance to personally ex- 
amine several small collections not before accessible to him. 
The results of this investigation are presented in the fol- 
lowing pages. Even with these additions it is practically 
certain that the Colorado list will yet receive many new species. 
All references are to the pages of the original edition to 
which this bulletin is to be considered as an appendix. On 
page 3, theltotal number of species and varieties known to occur 
in Colorado should be changed to 374, of which 236 are known 
to breed. 
