BIRDS OF EASTERN MASSACHUSETTS. 135 
season (1868); they evidently had a nest in the immedi- 
ate vicinity. I have seen specimens taken in Massachu- 
setts in full plumage quite frequently. 
152. Accipiter Cooperii, Boy. — Cooper’s Hawk. One 
of the most common Hawks, called everywhere “Chicken 
Hawk.” Summer resident. I do not think any remain 
during winter. Breeds, nesting in trees. 
153. Accipiter fuscus, Bon. — Sharp-shinned Hawk, 
“ Pigeon Hawk.” Common summer resident. Breeds. 
154. Butes bovealis, Visry.— Red-tailed Buzzard, 
“Red-tailed Hawk.” Comuinon resident; exceedingly trouble- 
some to farmers. This and B. dineatus are the well-known 
and formidable ‘“‘Hen-Hawks.” Nests in tall trees. 
155. Buteo lineatus, Jar. — Red-shouldered Buzzard, 
“Red-shouldered Hawk,” “Hen Hawk.” Common resi- 
dent ; usually more abundant in this immediate locality in 
winter than during any other season. Breeds, nesting in 
tall trees, generally in swampy places. 
The following is a description of a Hawk of this species 
which is remarkably light-colored. This specimen is so 
different from others of the same species that it was at 
first supposed to be the Butes Cooperii, Cass., and was men- 
tioned as such by Mr. J. A. Allen.* This specimen is also 
much larger than the average, as will be seen by the table 
of measurements, and was evidently an immature bird, 
which corroborates the rule given in the Introduction (p. 
84) relative to birds decreasing in size with age. | 
4 
Desi ription of a light-colored specimen of B. lineatus.t | 
Bill not very large, ae lobed on the upper man- 
dible ; color, dark brown. Upper parts dark brown, with 
each feather spotted and barred irregularly with white ant 
pale rufous, the latter colors predominating on the head 
* “ American Naturalist,” TIT. p. 519. 
¢ Taken from a mounted specimen 
