1914 9 



DISTRIBUTIONAL I.IST OF THE BIRDS OF ARIZONA 



1. Aechmophorus occidentalis (Lawrence). 



Western Grebe. 



Synonym — Podiceps occidentalis. 



Status — But two published records of its occurrence in Arizona. Henshaw 

 (1875b, p. 488) secured a specimen on the Gila River in November; and Brown 

 ( 1903, p. 50) reported it as a permanent resident in the vicinity of Yuma. There 

 is, however, no evidence of its breeding there, or anywhere else in the state. 



2. Colymbus nigricoUis californicus (Heermann). 



American EarEd Grebe. 



Synonyms — Podiceps californicus; Podiceps anritus califoniicits. 



Status — This species was found breeding by Mearns (1890a, p. 50) in the 

 high plateau region north of the Mogollon Mountains — Stoneman's Lake, Mor- 

 mon Lake, and near Flagstaff. It has also been recorded from the Colorado 

 River at Mohave, and from Moencopie, in northern Arizona, in September. 



3. Podilymbus podiceps (Linnaeus). 



Pied-billed Grebe. 



Synonym — Podilymbiis carolinensis. 



Status — Apparently fairly corhmon on the Colorado River during the mi- 

 grations and in winter, while it is of only casual' occurrence elsewhere. There 

 are no definite breeding records for the state, though Brown (1903, p. 49) speaks 

 of it as a resident in the vicinity of Yuma. 



4. Gavia immer (Briinnich). 



Common Loon. 



Synonym — Colymbus torquatits. 



Status — According to Coues (1866a, p. 100) a common winter visitant on 

 the Colorado River. There is in the Museum of Vertebrate Zoology an adult 

 female (no. 6403) taken (probably by W. W. Holder) at "Mineral City on the 

 Colorado River'' (^Ehrenberg), April 4, 1864. 



5. Gavia stellata (Pontopiddan). 



Red-tpiroated Loon. 



Synonym — Uriiiator lumnie. 



Status — There is but one record for the state, that of an immature male se- 

 cured by Brown on the Papago Indian reservation, near Tucson, December 20, 

 1884 (Scott, 1886, p. 383). 



6. Larus delawarensis Ord. 



Ring-billed Gull. 



Status — Seen by Coues (1866a, p. 99) on the Colorado River "in the autumn 

 of 1865," The only recent record known to me is that of Price (1899, p. 90), 

 who doubtfully identified as of this species two small gulls seen near Yuma, No- 

 vember 27, 1898. 



