THREE-TOED WOODPECKER. 167 
Pinus ponderosa, and never retires into the thick 
damp forest. It arrives in small numbers at Col- 
ville in April, and disappears again in October 
and November, or as soon as the snow begins to 
fall. Although I did not succeed in obtaining 
its eggs, I saw in the month of. May a pair nesting 
in a hole bored in the branch of avery tall pine- 
tree (Pinus ponderosa). This bird seldom flies 
far, but darts from tree to tree with a short 
jerking flight, and always whilst flying utters a 
sharp, clear, chirping cry. The specimens sent 
home were shot in the Colville valley. 
BLack- BACKED ‘THREE-TOED WooODPECKER 
(Picoides arcticus, Swainson).—I obtained this 
bird once only ; it was on the summit of the Cas- 
cade Mountains. It was late in September, and 
getting cold; the bird was alone, and flying rest- 
lessly from tree to tree, but not searching for in- 
sects. Both when on the wing and when clinging 
against a tree, it continually utters a shrill plain- 
tive cry. Its favourite tree appears to be the 
Pinus contorta, which grows at great altitudes. 
I do not think this woodpecker is found except 
on the hill-tops. In the valleys and lower 
plains it is replaced by the Banded Three-toed 
Woodpecker (Picoides hirsutus). 
Log Cock (Hylatomus pileatus, Baird.).—Not 
