ACCIPITER. 47 
subtus fuscis, griseo-albo fasciatis ; subalaribus rufis, albo fasciatis; cauda schistacea, nigricanti-quadri- 
fasciata, apice alba: rostro nigricante, cera et pedibus flavis. Long. tota circa 16-0, ale 9:0, caudee 8°7, 
tarsi 2°3. (Descr. maris ex San Miguel Molino, Puebla, Mexico. Mus. nostr.) 
2 mari similis, sed major et paulo obscurior. 
S juv. Supra fuscus, plumis omnibus plus minusve rufo marginatis, scapularibus et tectricibus caudee superioribus 
maculis celatis albis notatis: subtus albus, cervino tinctus, plumis omnibus in pectore stria rhachidali 
fusca latiore. 
Hab. Norta America, temperate regions ®.—Mexico, Hermosillo in Sonora (Ferrari- 
Perez), Mazatlan (Grayson*), Cafiada in Chihuahua (W. Lloyd), Guanajuato, 
Guadalajara (Dugés), Sierra de Valparaiso, Sierra de Nayarit (W. B. Richardson), 
Hacienda de San Marcos near Zapotlan (W. Lloyd), San Miguel Molino (Ferrari- 
Perez), Omilteme (Mrs. H. H. Smith), Orizaba (Sumichrast !°), Oaxaca (Fenochio), 
Totontepec (Loucard*), Tonala'°, Santa Efigenia® 1° (Swmichrast), Chimalapa 
(W. B. Richardson); Guaremana (Constancia), Coban®, Duefias (0. S. & 
Ff. D. G.); Costa Rica (v. Frantzius *, Carmiol), El Mojon (Cooper 4). 
Cooper’s Hawk is a well-known bird in North America as far north as the southern 
portions of Canada. As its food consists almost exclusively of wild birds and poultry, 
its depredations are dreaded by the owners of the latter, its boldness being notorious. 
In Mexico and Central America Accipiter cooperi would appear to be less common, 
though widely distributed in the former country. In Guatemala we only met with 
birds in immature plumage, and those but rarely. In Costa Rica it appears to be also 
scarce, and from the intervening country we have no tidings of it. 
The Mexican bird was separated by Swainson under the name of A. mexicanus, and for 
some time it was considered to be distinguishable from A. cooperi. Latterly this view 
has been relinquished, and all southern birds now pass under the last-mentioned name. 
The only other species of Accipiter found in our country at all comparable with 
A, cooperi in size is A. bicolor; but the two are readily distinguishable, the former 
being white beneath with frequent transverse rufous bars, the latter nearly uniform 
slate-colour. The young of A. cooperi is covered on the under surface with dark 
tear-shaped spots, whilst that of A. dicolor is uniform creamy white. 
The habits of A. cooperi are well described by Capt. Bendire !2 and Dr. Fisher 1°, 
— 2, Accipiter bicolor. 
Sparvius bicolor, Vieill. N. Dict. d’Hist. N. x. p. 325°. 
Accipiter bicolor, Scl. & Salv. Ex. Orn. pp. 137, 170, t. 69°; P. Z. S. 1870, p. 838°; Salv. Ibis, 
| 1869, p. 817°; P. Z. S. 1870, p. 215°; Sharpe, Cat. Birds Brit. Mus. i. p. 154°; 
Sumichrast, La Nat. v. p. 236"; Boucard, P. Z. 8. 1883, p. 457°; Zeledon, An. Mus. 
Nac. Costa Rica, 1887, p. 126°; Cherrie, Auk, 1892, p. 328“. 
Accipiter sexfasciatus, Swains, An. in Menag. p. 282"; Cab. J. f. Orn. 1869, p. 308 %. 
Accipiter pileatus, Scl. P. Z. 8S. 1859, p.389 (nec Temm.)*; Salv. Ibis, 1861, p. 355; Lawr. Ann. 
Lyc. N. Y. vii. p. 289°; ix. p. 134; v. Frantz. J. f. Orn. 1869, p. 369”. 
Supra saturate schistaceus, capite summo nigricante, nuche plumis ad basin albis: subtus schistaceus, 
