VOl i^9' VI ] Cooke, The Birds of Colorado. 415 



possible explanation of its late addition to the Colorado bird list may be 

 that the species has moved west with the settlements through Kansas and 

 Nebraska and has only lately reached Colorado. 



Aphelocoma woodhousei. Woodhouse's Jay. — Common November 

 26-29, 1907, at Gaume's Ranch, Baca County, and undoubtedly winters 

 in that vicinity (Cary). This is the most eastern record for Colorado. 



Cyanocephalus cyanocephalus. Pixon Jay. — This species was found 

 by Warren to be quite common, April and May, 1905, among the cedars of 

 Baca County. Cary found them common in the same region November 

 26-29, 1907, but there is no proof as yet that they breed in the vicinity. 

 Noted at Yuma, September 26-October 13, 1906 (Patten). 



Dolichonyx oryzivorus. Bobolixk. — So many records have been 

 contributed the last few years that it seems probable the species is becom- 

 ing more common in the State. Some of these records are: Beulah, May 

 18. 1906 (Jones); Salida. May 14. 1908 (Frey); Middle Park, near the 

 Troublesome River, July 11, 1897 (Smith); near Steamboat Springs, 

 June 1-10, 1907. probably breeding (Warren); Meeker, probably breeding, 

 1905 and 1906 (Hopkins); Boulder, many seen for four consecutive years, 

 1902-1905, during May and July, showing that they have become estab- 

 lished as regular migrants; not yet known to breed in this vicinity (Hender- 

 son). No sure breeding records as yet in Colorado. 



Agelaius phoeniceus fortis. Thick-billed Redwixg.— Much informa- 

 tion has been gathered the past few years in regard to the Red-winged 

 Blackbirds of Colorado. Where only one form was recognized in 1897, 

 there are now three forms, fortis. neutralis and arctolegus; while the 

 typical form phoeniceus. is now restricted to the eastern United States. 

 The above form, fortis, breeds on the plains of Colorado east of the moun- 

 tains, and also west in the foothills, at least to Estes Park at 7500 feet 

 altitude. It winters on the plains from Denver southward. 



Agelaius phoeniceus neutralis. Sax Diego Red-wixg. — This form 

 probably breeds in Colorado west of the main range and winters irregularly 

 north at least to Grand Junction. 



[Agelaius phoeniceus arctolegus. Northerx Red-wixg. — This is a 

 northern form, breeding north of the United States and coming south in 

 winter to Colorado. A specimen was taken December 29, 1892, at Semper, 

 and the form will probably prove not uncommon on the plains of north- 

 eastern Colorado. This form has not yet been accepted by the A. O. U. 

 Committee.] 



Icterus spurius. Orchard Oriole. — Common summer resident at 

 Wray. and breeds (Smith). This is the first breeding record for the State. 

 Seen at Yuma, May 17 and 19, 1908, (Patten). 



Icterus galbula. Baltimore Oriole. — Common summer resident at 

 Wray and breeds (Smith). The first certain breeding record for Colorado. 

 Seen at Yuma, May 22. 1905, May 22, 1906, May 24, 1907 (Patten). 



Icterus bullocki. Bullock's Oriole. — Has been noted as a common 

 breeder, along the eastern edges of the State from Baca County to Yuma 

 County. 



