40 WyoMING BIRDs. 
308b. Pedioecetes phasianellus campestris: Prairie Sharp-tailed 
Grouse. 
“Resident and common in eastern and northwestern Wyo- 
ming. I have never seen this species west of the Big Horn 
or Laramie Mountains.” (Knight.) Warren records what 
he thinks was this form from the western portion of the 
state. 
* 
309. Centrocercus urophasianus: Sage Hen. 
Common resident throughout the sage-brush region of the 
state. Not ranging into the timbered portions. 
ORDER XI. COLUMBIDAE. 
COLUMBIDAE (Doves and Pigeons). 
These birds feed exclusively upon a vegetable diet. The Mourn- 
ing Dove consumes enormous quantities of weed seeds. At times its 
crop contains over seven thousand small weed seeds. Doves also 
eat grain, mostly that which is unharvested or otherwise of small 
value. 
REFERENCES: 
1. Farmers’ Bulletin No. 54, p. 6. 
2. “Useful Birds and Their Protection,’ Massachusetts Board 
of Agriculture, 1913, p. 324. 
3. “Birds in Their Relation to Man,” Weed and Dearborn, pp. 
219-222. 
4. “Birds as Weed Destroyers,’ Judd, Year Book of the De- 
partment of Agriculture, 1898, pp. 231-232. 
315. Ectopistes migratorius: Passenger Pigeon. 
“Accidental. There is but one record for Wyoming of this 
bird. McCarthy reports that he took a single specimen 40 
miles west’ of Fort Laramie in 1859. Robert Ridgway in- 
forms me that this report is correct.” (Knight.) 
316. Zenaidura macroura carolinensis: Mourning Dove. 
Very abundant summer resident over the entire state up to 
about 9,500 feet and possibly higher. 
