1.54 
TIIK coxnoR 
Vol. XVI 
Asyndesmus lewisi. Lewis Woodpecker. Summer resident. I have seen 
it only in the southern part of the region, in cottonwood groves along the Sun 
River, just outside the mountains. 
Colaptes cafer collaris. Red-shafted Flicker. Common summer resident. 
Xests in cottonivood groves in the prairies and in the lower mountain canyons 
up to 5500 feet. Most of the birds are hybrids, but I have seen none in this 
region that were typical of the eastern species. Migration date ; April 7, 1912. 
Two birds wintered near Choteau in the winter of 1912-13. 
Chordeiles virginianus henryi. Western Nighthawk. Common summer 
resident both in prairies and in the mountains below 6000 feet. Migration 
dates : June 7, 1912, August 28, 1911, and August 29, 1912. 
Selasphorus rufus. Rufous Hummingbird. Summer resident. Not com- 
mon, hut found most frequently along the foothills of the mountains. 
Stellula calliope. Calliope Hummingbird. Summer resident of the moun- 
tains. Seen rarely. I secured a male on Birch Creek, June 2, 1912. 
T3a’annus tyrannus. Kingbird. Abundant summer resident in the prai- 
ries. The Kingbirds in this region depart from their usual habit of nesting 
high, and place their nests low down in young cottonwoods or buffalo-berry 
bushes, particularly those along the hanks of streams. The nest frequently 
overhangs the water. In 1912 I found ten nests near Choteau, no one of which 
was higher than eight feet from the ground, and one of them was less than two 
feet from the water of the stream it overhung. Migration dates: May 23, 1912, 
and August 22, 1911. The first nests are built in this region about the middle 
of June. The eggs take fourteen days to hatch, and the young leave the nest 
when fourteen or fifteen days old, so that they are first on the wing in the 
latter half of July. 
Tyrannus verticalis. Western Kingbird. Rare summer resident in the 
prairies. One pair nested near Choteau in 1912. Others seen on the Sun 
River, near Augusta. Migration dates : May 28, 1912, and August 18, 1911. 
Sayornis sayus. Say Phoebe. Summer resident on the prairies. Not 
common. Nests on buildings or on rocks on the sides of buttes. A nest of this 
si^ecies on a building in Choteau is said to have been occupied for the past sev- 
enteen years. When I first arrived in Choteau, June 21, 1911, there were six 
young in this nest, that left the nest about July 4. The next year the owners 
returned April 28, sitting commenced on a set of seven eggs on May 23, the 
eggs all hatched on June 4, and the seven young were successfully reared and 
left the nest on June 23. A second brood was started and three eggs were 
laid by July 2. 
Nuttallornis borealis. Olive-sided Flycatcher. Summer resident in the 
mountains, but not common. Rare migrant on the prairies. I secured a bird 
near Choteau, May 26, 1912. 
M3riochanes richardsoni richardsoni. Western Wood Pewee. Abundant 
summer resident of cottonwood groves on the prairies. Migration dates : June 
6, 1912, and August 13, 1911. 
Empidonax trailli trailli. Traill Flycatcher. Rare summer resident. 
Observed on Willow Creek, northern Lewis and Clark County, June 30, 1911. 
A migrant bird secured near Choteau, May 24, 1912. 
Empidonax minimus. Least Flycatcher. Abundant summer resident of 
cottonwood groves on the prairies. Migration date: May 22, 1912. Nesting 
