36 ROCHESTER ACADEMY OF SCIENCE. 



360. Falco sparveriiis Linn. American sparrow hawk. 



Summer resident; common. March 15 — Nov. i. Occasionally 

 remains all winter. Frequents isolated trees, telegraph poles and the 

 borders of woods. Nest, in a hollow tree or a woodpecker's hole, 20 

 -70 ft. from the ground;. May 10-25; ^ggs 4-6. Mainly beneficial; 

 food, insects, mice and birds. 



364. Pandion haliaetus carolinensis (Gmel.) American osprey. 

 Transient visitant; fairly common. April 12 — May 15; Sept. 15 — 



Oct. 20. Occasionally seen throughout the summer. Found along 

 the lakes and rivers. Often visits small ponds far inland. Feeds al- 

 most exclusively on fish. 



Family STRIGIDAE. Barn owls. 



365. Strix pratincola Bonap. American barn owl. 



Summer visitant; rather rare. Reported from Navy Island, Niag- 

 ara River. — Langille, p. 607. Buffalo, July 5, 1890 — Auk 7, 400; 

 also July 18, 1895 — Auk 12, 393. Cincinnatus, Sept. 13, 1891 — Auk 

 10, 301. Marcy, Sept., 1898-Auk 17, 177. Canandaigua, June 18, 

 1900. 



Family BUBONIDAE. Horned owls, etc. 



366. Asio wilsonianus (Less, ) American long-eared owl. 

 Resident; fairly common. Frequents evergreen woods and dense 



swamps. Nest, usually in an old crow's or squirrel's nest. Mr. C. F. 

 Stone found its nest in Potter Swamp, Yates County, May 16, 1898, 

 the eggs just hatching. Eggs 3-6. Mainly beneficial. 



367. Asio accipitrinus (Pall,) Short-eared owl. 



Winter visitant; fairly common in November and April, Not 

 known to breed, although specimens have been taken May 20 and 

 August 8. Found in grassy swamps, usually in small companies. 

 Quite active by day, but hunts mostly at twilight. Mainly beneficial, 

 a large portion of its food being mice. 



368. Syrnium nebulosum (Forst.) Barred owl. 



Resident; common in the more wooded districts. Nest, in a hol- 

 low tree or old crow's nest; eggs 2-4. Not as beneficial as the screech 

 owl, nor as injurious as the great horned owl. 



