FALCONING. ASTUR. 
17 
Pigeon Hawk, Falco columbarius, Wxls. Amer. Orn. v. ii. p. 107. 
Falco columbarius, Bonap. Syn. p. 38. 
Pigeon Hawk, Falco columbarius, Nutt. Man. v. i. p. 60. 
Little Corporal Hawk, Falco temerarius, Nutt. Man. v. i. p. 61. Adult Male. 
Falco columbarius. Pigeon Hawk, Swains. & Rich. F. Bor. Amer. v. ii. p. 35 ^. 
Falco ^salon. Merlin, Swains. & Rich. F. Bor. Amer. v. ii. p. 37. 
Pigeon Hawk, Falco columbariu-s, Aud. Orn. Biog. v. i. p. 466 ; Young, v. i. 
p. 381, Male ; v. v. p. 368. 
22. 4. Falco sparverius, Linn. Sparrow Falcon. — Spar- 
row Hawk. 
Plate CXLII. Male and Female. 
Male with the upper part of the head and wing-coverts light greyish- 
blue^ seven black spots round the head, and a light red patch on the 
crown ; back light red, spotted with black ; tail red, with a broad 
subterminal black band. Female with the head nearly as in the male, 
the back, wing-coverts, and tail, banded with light red and dusky. 
Young similar to the female, but with more red on the head, which is 
streaked with dusky. 
Male, 12. Female, 12. 
Generally distributed. Resident in the south. Abundant. 
American Sparrow-Hawk, Falco sparverius, WiLS. Amer. Orn. v. ii. p. 117. 
Falco sparverius, Bonap. Syn. p. 27. 
American sparrow-hawk, Falco sparverius, Nutt. Man. v. i. p. 58. 
Falco sparverius. Little Rusty-crowned Falcon, Swains. & Rich. F. Bor. Amer. 
V. ii. p. 31. 
American Sparrow-Hawk, Falco sparverius, Aud. Orn. Biog. v. ii. p. 246 5 
V. v. p. 370. 
GENUS X. ASTUR, Cuv. HAWK. 
Bill short, robust ; its upper outline sloping, and nearly 
straight at the base, then decurved ; cere short, bare above ; 
edge of upper mandible with a festoon, succeeded by a broad 
sinus. Nostrils elliptical. Feet of moderate length ; tarsi 
moderate or slender, feathered at least one-third of their 
length, broadly scutellate before and behind ; first and 
second toes strongest and equal, third much longer, and con- 
nected at the base by a web with the third, which is shortest ; 
claws long, well curved, acuminate. Wings very broad, of 
moderate length, much rounded, fourth and fifth quills 
longest, first much shorter, outer four abruptly cut out on the 
inner web. Tail long, much exceeding the wings, rounded. 
Those of more slender form, with proportionally longer 
tails and tarsi, are separated by many authors to form a 
group, to which the name of Accipiter and Nisus are given. 
