2 1 6 SLA TE- COLO URED HA WK. 



Length, five inches and a quarter ; extent, eight inches ; 

 upper parts and sides of the neck, a dark mouse brown, 

 obscurely streaked on the back with dusky black ; lower 

 parts, pale dull yellowish white ; breast, marked with faint 

 streaks of brown ; chin and vent, white ; rump, vivid yellow ; 

 at each side of the breast, and also on the crown, a spot of 

 fainter yellow ; this last not observable without separating 

 the plumage ; bill, legs, and wings, black ; lesser coverts, tipt 

 with brownish white ; tail-coverts, slate ; the three exterior 

 tail-feathers marked on their inner vanes with white ; a touch 

 of the same on the upper and lower eyelid. Male and female 

 at this season nearly alike. They begin to change about the 

 middle of February, and in four or five weeks are in their 

 slate-coloured dress, as represented in the figure referred to. 



SLATE-COLOUBED HAWK. {Falco Pennsylvanicus.) 



PLATE XLVI.— Fig. 1. 



A CCIP ITER PENNS YLVANICUS.-SwAmsox. * 



Falco velos, Bonap. Synop. p. 29. — Autour a bee sineuse, Temm. PL Col. 67 

 (young). — Accipiter Pennsylvanicus, North. Zool. ii. p. 44. 



Tins elegant and spirited little hawk is a native of Penn- 

 sylvania, and of the Altantic States generally, and is now for 

 the first time introduced to the notice of the public. It 

 frequents the more settled parts of the country, chiefly in 

 winter ; is at all times a scarce species ; flies wide, very 



* It is now satisfactorily ascertained that this and the Falco velox of 

 the la^t plate are the same species, the latter representing the plumage 

 of the young female. The changes and differences are the same with 

 those of the common European sparrow hawk, Accipiter nisus. 



This hird most prohably extends to the intertropical parts of South 

 America. Its occurrence far to the northward is not so common. It 

 was not met with by Dr Richardson, and the authority of its existence 

 in the Fur Countries rests on a specimen in the Hudson's Bay Company 

 museum, killed at Moose Factory. It very nearly resembles two small 

 species from Mexico, the A. fringilloides of Mr Vigors, and one newly 

 characterised by Mr Swuinsuii as A. Afvxivanus. — Ed. 



