624 The American Naturalist. [July, 
19. Bonasa umbeilus (Linn.), Ruffed Grouse. I saw one May 10, 
1890, in a thicket, a mile north of West Chester. 
20. Ectopistes migratorius (Linn.), Passenger Pigeon. I shot onein- 
dividual of this, now very rare, species, Sept. 1, 1886, in Birmingham 
township, and a female in West Goshen, Sept. 9, 1887. Both speci- 
mens were in immature plumage, and are now in the collection of the 
Acad. Nat. Sci., Philadelphia. I believe these to have been the last 
specimens taken in eastern Pennsylvania. 
21. Zenaidura macrura (Linn.), Mourning Dove. Abundant sum- 
mer resident. (Earliest arrivals: March 16, 1885; Feb. 22, 1886; 
March 3, 1887; March 24, 1888; March 14, 1889. Bulk arrived: 
March 26, 1886; March 30, 1887; March 31,1888; March 29, 1889). 
22. Cathares aura (Linn.), Turkey Vulture. Common through the 
spring, summer and fall; in mild winters a few are to be seen. 
23. Cireus hudsonius (Linn.), Marsh Hawk. Infrequent summer 
resident. 
24. Accipiter velox (Wils.), Sharp-shinned Hawk. Infrequent; I 
have observed it only in the fall, winter and spring. 
25. A. cooperi (Bonap.), Cooper’s Hawk. Rather infrequent resi- 
dent. 
26. Buteo borealis (Gmel.), Red-tailed Hawk. Common resident; 
more abundant than any other hawk. 
27. B. lattisimus (Wils.), Broad-winged Hawk. I shot an adult 
male in West Goshen, April 22, 1891. 
28. Falco peregrinus anatum (Bonap.), Duck Hawk. I saw a speci- 
men in the flesh, shot in East Bradford, Feb. 14, 1886. This specimen 
is now in the collection of Geo. W. Roberts, Esq., West Chester. 
29. F. columbarius Linn. My brother shot a male in West Goshen, 
Oct. 25, 1885. 
30. F. sparvarius Linn., American Sparrow Hawk. Common resi- 
dent, though not remaining through severe winters. 
31. Pandion halicetus carolinensis (Gmel.), American Osprey. In- 
frequent; I have noticed a pair on several occasions during the sum- 
mer of 1888, along the Brandywine (East Bradford). This pair might 
have been breeding in this vicinity. Is it not probable that many of 
those seen in this county have crossed over from New Jersey ? (Earliest 
spring date, April 4, 1888). 
32. Asio acciptrinus (Pall.), Short-eared Owl. A not infrequent 
visitant in the winter and early spring. I have never seen it in the 
fall. During some years it is more abundant than in,others. I have 
