230 THE Witson BuLLETIN—Nos. 76-77. 
20; and in Maine by Knight as early in April. Wm. Wood, 
East Windsor, Conn. (Am. Naturalist, V, 1871, p. 759-60), 
informs us that in 1856 his attention was called to twenty 
or more hawks—species not stated—that were diving, 
screaming and going through various gyrations high in the 
air, and passing to the N. E. in the early spring. Early in 
April, 1860, a similar migration was witnessed, when the 
number in sight at one time was about fifty. About the 
last of March or first of April, 1870, a friend of his observed 
a flight, when the air seemed filled with diving and scream- 
ing hawks passing northward and seventy were counted in 
sight at one time. In all of these flights they were not in 
flocks according to the common acceptance of the word, but 
were in pairs or groups of about four usually. Rev. Job 
states that about the middle of April or later there is some- 
times witnessed a great flight, especially of the Broad- 
winged Hawk. Along the Housatonic Valley, in Conn., he 
has seen loose squadrons of them. Dr. Allen mentions flights 
at Springfield, Mass., for several years quite regular in ap- 
pearance, in autumn as well as spring. 
FBarliest Latest 
Locality ; Yrs. obsery. Av. date. date. date. 
Lexington, Ky. 2 Apr. 18,05, May 7, ’04. 
Chicago Vic. 8 Apr. 22, Feb. 11,’97, May 5, ’00. 
Lorain Co., O. 7 Apr. 17, Mar. 13, May 10, 
Toronto, Ont. 11 Apr. 22, Mar. 6,’97, May 13,799. 
Ottawa, Ont. 4 Apr. 29, Apr. 24,’08, May 19, 
Pierre, S. Dak. 2 Mar. 25,’06, Apr. 12, 07. 
Tolma, No. Dak. 2 Apr. 4, Apr. 20 
Winnipeg, Man. il May 3, 05. 
Edmonton, Alb. 1 May 8,03. 
Philadelphia Vic. 12 Apr. 14, Mar. 1,’04, Apr. 30, ’05. 
Princeton, N. J. 3 Feb. 7,’06, Apr. 22, ’07. 
Franklin Co., Me. 11 May 1, Apr. 14,’96, May 28, ’06. 
AUTUMNAL.—The retrograde movement can be traced in 
the east through Rhede Island, Connecticut, southeastern 
New York, northern New Jersey, eastern Pennsylvania, and 
Maryland and Virginia, when it is lost. No general move- 
ment in the middle west south of the Great Lakes appears. 
The Canadian contingent does not utilize the various pas- 
sages between these large bodies of water to any extent as 
