APPENDIX 



LIST OF BIRDS OBSERVED ON OUR MEXICAN TRIP 



'HE following list, omitting the birds which we 

 observed in Cuba, includes all the more com- 

 mon species which would be observed by any one 

 making such a trip to Mexico. I have followed 

 the classification of the American Ornithologists' 

 Union Check-List. 



The delicate variations which at present are being recognized in 

 the delineation of species and especially of subspecies of birds, 

 although necessary in their function of aiding our knowledge of 

 distribution and the effects of environment, yet render the exact 

 identification of living birds an impossibility in some instances. But 

 the residential and non-migratory habits of many Mexican species 

 and their unusual fearlessness are very great helps to one who 

 for the first time undertakes to observe the birds of this country. 

 Whenever I have given brief descriptions, I have endeavored to use 

 the characteristics which are instantly apparent in a quick glance 

 with a glass or with the unaided eye. Where the description occurs 

 in the body of the book, it is not repeated, but the reference is given. 



The majority of these notes were made in the States of Jalisco 

 and Colima in west-central Mexico. The dates and localities coin- 

 cide approximately as follows : — 



Guadalajax-a, — the first half of January and the first half of 

 March. 



Chapala and its marshes, — the latter half of March. 



The higher or upper barrancas, near the eastern slope of the 

 volcano of Colima, — the latter half of January. 



<i 379 ^ 



