626 The American Naturalist. [July, 
46. Trochilus colubris Linn., Ruby-throated Humming-bird. Rather 
common summer resident. (Earliest spring arrivals: April 14, 1886 ; 
May 9, 1887; May 17, 1888; May 2, 1897). 
47. Tyrannus tyrannus (Linn.), Kingbird. Common summer resi- 
dent. (Earliest spring arrivals: April 2, 1885; April 7, 1886; May 
4,1887. Bulk arrived: May 5, 1887; May 9, 1888). 
48. Myiarchus crinitus (Linn.), Crested Flycatcher. Common sum- 
mer resident, though not as abundant as the preceding. (Earliest 
spring arrival: May 3,1890. Bulk arrived: May 7, 1887). 
49. Sayornis phoebe (Lath.), Pewee. Abundant summer resident. 
It arrives in the spring much earlier than the other flycatchers. 
(Earliest spring arrivals: March 29, 1886; March 27,1887; March 
23, 1889; March 16, 1890; April 8, 1891; March 23, 1895. Bulk 
arrived : April 3, 1886; April 21, 1887). 
50. Contopus virens (Linn.), Wood Pewee. Abundant summer resi- 
dent, more numerous than the preceding species. (Earliest spring ar- 
rivals: April 17,1886; April 28,1891. Bulk arrived: May 7, 1887). 
51. Empidonax flaviventris Baird, Yellow-bellied Flycatcher. In- 
frequent if not rare migrant in the fall. I have secured only three or 
four specimens, but have seen others in the collections of local ornith- 
ologists. 
52. E. virescens (Vieill), Acadian Flycatcher. An infrequent mi- 
grant in the spring. 
53. E. minimus Baird, Least Flycatcher. Infrequent migrant. 
shot three specimens and saw another in the month of May (1890, 1891), 
but have never seen it in the fall. 
54. Cyanocitta cristata (Linn.), Blue Jay. Common resident in thick 
woods along the Brandywine, less frequent in higher localities. In the 
winter it is also found in the open country. 
55. Corvus americanus Aud., American Crow. Abundant resident, 
though some appear to migrate in severe winters. 
56. Dolichonyx oryzivorus (Linn.), Bobolink. Common, occasion- 
ally even abundant, migrant in the spring and fall. In the former 
season it is found almost exclusively along fhe Brandywine, but in the 
fall is frequently met with also in the uplands, in clover fields. (I 
have the following notes on its occurrence. Spring: May 11-20, 1896; 
May 5-17, 1887; fall: Aug. 4-29, 1886; Aug. 8, 1889; Sept. 25, 
890) 
57. Molothrus ater (Bodd.), Cowbird. Abundant summer resident. 
(Earliest spring arrivals: March 13, 1887; March 14, 1889; March 
15,1891. Bulk arrived : March 24, 1887 ; April 4,1848; March 23, 
1889). 
