WYOMING BiIrDs. 49 
408. Asyndesmus lewisi: Lewis’ Woodpecker. 
Common summer resident in northern Wyoming. 
412a. Colaptes auratus luteus: Northern Flicker. 
Rather uncommon summer resident as compared with the 
following form. All records so far are from the eastern 
portions of the state. 
413. Colaptes cafer collaris: Red-shafted Flicker. 
Abundant summer resident throughout the state, from the 
plains region to timber line. 
ORDER XVI. MACROCHIRES. 
CAPRIMULGIDAE (Nighthawks, Whip-poor-wills, etc.). 
Enormous numbers of flying insects are consumed by Night- 
hawks and Whip-poor-wills. Like the swallows, these birds catch 
their food while on the wing. ‘Their wide mouths are kept open 
and so serve as traps for mosquitoes, gnats, flies, beetles, Mny flies, 
locusts, etc. Prof. Aughey of Nebraska examined seven stomachs 
of Nighthawks, which contained altogether three hundred and forty- 
eight Rocky Mountain locusts. Their principal food is insects 
which fly at dusk. They are very useful birds. 
REFERENCES : 
1. Farmers’ Bulletin No. 54, pp. 13-14. 
2. Biological Survey Bulletin No. 38, p. 9. 
3. Year Book of the Department of Agriculture, 1904, p. 514. 
4. “Birds in Their Relation to Man,” Weed and Dearborn, pp. 
178-180. 
418. Phalaenoptilus nuttalli nuttalli: Poor-will. 
Fairly common summer resident at the lower altitudes 
throughout the state. 
-420a. Chordelles virginianus henryi: Western Nighthawk. 
Most of the records of Nighthawks in the state refer to 
this form, which is abundant summer resident at almost 
all altitudes up to 11,000 feet. 
