BIRDSr— FAI-qOI^IlJfAl— FALCO SPAEVEEIUS 13 



Sub-Qenua Hierofiilco. 

 FALCQ CANDIOANS, Gmelin. 



Faico candicans, Gm. Syst. Nat. I. 275. (1788.) 

 Falco groenlandicus, Daudw, Traite d'Orn. II, 107. (1800.) 

 Fahofuscus, Fabricids, Fauna Groenlandica, p. 56. (1780)? 

 Falco arcticxis, Holboll, Label in Ac&d. Mus. Philadelphia. 

 ^dult. — Entirely white; upper parts with irregular confluent transverse bands, and large subterminal hastate or sagittate spots 

 of ashy brown; under parts with a few longitudinal narrow stripes of brown. Primary quills white, with their tips brownish 

 black ; tail white, with transverse bands of brownish black on the outer webs of the external feathers. 



Yoimg. — Upper parts with the brown predominating and of a lighter shade than in the adult, and more or less barred and 

 spotted with white. Under parts white, tinged with ashy, with longitudinal stripes of brown, especially on the . ' 3 



Quills and tail ashy brown, with traifsverse bands of dull white. * 



Total length about 34 inches, wing ] 6, tail 10 inches. 

 Hab. Northern North America, Greenland. Spec, ia Mus. Acad. Philad. 



A very handsome falcon, almost entirely pure white in its adult plumage. This bird and 

 the succeeding have been demonstrated by Mr. Holboll and other Danish naturalists to be 

 resident species in Greenland, and inhabit also other countries of the northern regions of the 

 continent of America. 



FALCO ISLANDICUS, Gmelin. 



The Gei Falcon. The Iceland Falcon. 



Falco islandicus, Gm. Syst. Nat. I, 375. (1788.) 



Falco islandus, FaiBricius, Faun. Groenl., p. 58. (1780)? 



Mult. — Entirely white; upper parts with regular transverse and very distinct bands of brow^,, becoming somewhat crescent, 

 shaped on the scapulars and rump, and slightly acuminate on the shafts of the feathers. Quills white, brownish black at their 

 tips ; tail white, with about twelve transverse narrow bands of brown. Under parts with a few longitudinal lines of dark 

 brown. 



Yoimg'. — Upper plumage brown, with transverse bands of dull white. Under parts.dujl white, with numerous circular and 

 irregular shaped spots, of dark broy^n, largest on the sides, and disposed to form transverse bands. Quills and tail dark brown 

 with, transverse bands of ashy white. 



Total length about 34 inches, wing 16^, tail 10 inches. 



Hab. Northern North America, Greenland. Spec, in Mus. Acad. Philad. 



Nearly allied to the preceding, and only to be distinguished from it by the different shape 

 and pattern of the darker markings on the upper parts of the body. Like the preceding too, 

 it inhabits Greenland ; and specimens that we have seen from that country cannot be distin- 

 guished from the well known bird of Iceland and northern Europe. 



Sub-Genus Tinnuneulus. 

 FALCO SPAEVEBIUS, Linnaeus. 



The Sparrow Hawk. 



Falco sparverius, Linn. Syst. Nat. I, 128. (1766.) 

 Falco dominicensiSf Gm. Syst. Nat. I, 285. (1788.) 



Falco gracilis, cinif,amomi/niji,s and isabellin/us, Sw. Cab. Cy. p. 281. (1838.) 

 FiGDRES. — Vieill. Ois. d'Am., Sept., pi. 12, 13 ; Catesby's Carolina^ pi. 5 ; Wilson Am. Oru. II, pi. 16, fig. 1, and IV 

 pi. 32, fig. 2 ; Aud. B. of Am., pi. 43, Oct. ed. I, pi. 22 ; Rich, and Swains. Faun. Bor. Am. Birds, pi. 24 ; De Kav Nat 

 Hist. New York, Birds, pi. 7, fig. 16. 



Mult. — Smaller than any of the preceding. Frontal band and space, including the eyes and throat, white, spot on the. 

 neck behind, two others on each side of the neck, and line running downwards from before the eye, black. Spot on the top of 



