54 The Ornithology of Chester County 
valley and Brandywine hills (Burns, Mon. Broad- 
winged Hawk, Wils. Bull., Nos. 76-77). Nidifica- 
tion commences by April 25, and the average date 
for complete set is May 15. 
81. Archibuteo lagopus sancti-johannis Rough- 
legged Hawk, “tiger hawk.” Rather rare winter 
visitant, though it is included in all but Montgom- 
ery’s list. In the winter of 1879, while hunting 
along the Brandywine, Dr. Warren observed seven 
individuals at one time (Bds. Pa., 92). I have, 
however, only nine or ten specific records, ranging 
from Dec. 9, 1886, to Mar. 22, 1914 (Fisher, 
Hawks and Owls, 91; Ehinger, Bd. Lore, xviii, 
28; Ms. from Thomas and DeHaven). 
82. Aquila chrysetos Golden Eagle. Straggler. 
Considered very rare by Barnard, Michener, War- 
ren and Pennock. According to Rhoads, one was 
shot at Oxford in 1881 or 1882 (Stone, Bds. E. Pa. 
and N. J., 87). Another in immature plumage was 
winged at Berwyn, Apr. 7, 1894, by George Quig- 
ley, and kept in confinement for some years at the . 
Sorrel Horse tavern (Abst. D. V. O. C., ii, 22). 
83. Haligzetus leucocephalus lencocephalus bald 
Eagle. Transient and occasional winter visitant, at 
least rare enough to excite general comment when- 
ever reported. Sept. 9, 1915, to May 22, 1910 
(Cass., v, 47; xii, 55; xiv, 41; xvi, 47; Bd. Lore, 
xii, 29; MS. Burns and Thomas). Dr. Warren 
narrates that about 1839, B. M. Everhart found 
within the present borough limits of West Chester 
a nest with one eaglet which he kept for some time. 
A nest was located on the North Valley hills, near 
