Brewster on the Breeding of the Acadian Owl. 1 43 
4. Loxia curvirostra americana, Coues. Common Crossbill. — 
Scattered irregularly all through the pine woods. Breeds at 7500 feet. 
5. Xanthocephalus icterocephalus, Bd. Yellow-headed Black- 
bird. — “At 9300 feet.” 
6. Corvus americanus, Aud. Common Crow. — “At 9300 feet.” 
The Crows of Southwest Colorado have many a lesson to learn. Gun in 
hand, I have walked past within a few feet of half a dozen who merely 
honored me with an idle stare. 
7. Cypselus saxatilis, Ridg. White-throated Swift. — “At 10,000 
feet; breeds.” 
8. Ceryle alcyon, Boie. Belted Kingfisher. — I have found it as 
high as 9500 feet. Breeds on all the lower rivers. 
9. Melanerpes torquatus, Bp. Lewis’s Woodpecker. — Very com- 
mon up to 7000 feet. 
BREEDING OF THE ACADIAN OWL (. NYCTALE 
acadica ) in Massachusetts. 
BY WILLIAM BREWSTER. 
So far as I can ascertain, the single egg of the Acadian Owl 
which is preserved in the National collection at Washington is 
the only authentic example known. It accordingly gives me 
unusual pleasure to announce the recent acquisition of a fine set 
of fully identified specimens taken by Mr. W. Perham at Tyngs- 
boro, Mass., April 5, 1881. Mr. Perham is probably already 
known to some of the readers of the Bulletin as a remarkably 
successful collector of Hawks and Owls. He takes many eggs 
of the Mottled Owl by hanging up artificial nests in suitable 
places in the woods. These 1 4 nests” are made from sections of 
hollow trunks boarded up at the open ends, with entrance-holes 
cut in the sides, and the Owls apparently find them quite to their 
taste for they freely appropriate them, both as roosting and nest- 
ing places. » 
Sometime late in March of the present year a pair of Saw- 
whets took possession of one which was nailed against the trunk 
of an oak in an extensive piece of woodland. No nest was made, 
the eggs being simply laid on a few leaves which squirrels 
