AVES FALCONID^. 58 1 



Back : Entirely black, save a few of the outer upper tail-coverts, which 

 are streaked with lanceolate, white markings. 



Tail : Black ; each feather broadly tipped with white, the whole making 

 a conspicuous, terminal white band. 



Wings : Primaries and secondaries very dark brown, nearly black and 

 slightly tipped with ashy white. Rest of the wing black. 



Lower parts : Black ; the breast with lanceolate white markings like 

 those of the throat, which become on the abdomen tiny, apical, roundish 

 spots on each feather ; inner face of the thighs and the feathers about the 

 vent, tawny brown ; the under tail-coverts blackish, with narrow white 

 margins. 



Bill : Yellow, becoming blue horn-color at the base. 



Iris : Dark hazel-brown. Bare skin of face and cere yellow ; bare crop- 

 patch yellow. 



Feet : Yellow, obscured more or less with brown. 



Imtnature birds and young of the year. — Head : Deep, smoky brown ; 

 the feathers of the crown with buffy brown tips and the sides of the face 

 shaded with yellowish brown. 



Neck : Blackish brown above and on the nape, where the feathers have 

 buffy brown tips ; the brown of the nape and back of the neck shading 

 into yellowish brown on the sides of the neck and beneath. 



Back: Dull, smoky brown, except the upper tail-coverts, which are 

 lighter yellowish brown. 



Tail : Yellowish brown, much like the upper coverts in tone ; the external 

 margins of the feathers shading into darker brown. 



Wings : Primaries clear, yellowish ocher at base, becoming dull, smoky 

 brown at their exposed surface, when the wing is closed, and so matching 

 the back ; the rest of the wing dull, smoky brown. 



Lower parts : Dull, smoky brown, with obsolete markings, spots in the 

 center of each feather, of a reddish brown shade ; this condition is plainest 

 on the breast and more obscure on the abdomen, while the sides and 

 flanks are immaculate, dull, smoky brown. 



Bill : Horn-brown, with a yellowish tip to the lower mandible. 



Iris : Brown. Cere and bare skin about the eye, slaty blue. 



Feet : Feet and legs slaty blue. 



Geographical Range. — Peculiar to the Falkland Islands. 



