FALCONID^] 



FALCO 



267 



Key of the Species. 



A. Larger wing over 11*0. 



a. Head like the back, blue or dark brown F. minor, p. 268. 



b. Head and nape rufous, contrasting with the 



blue or brown back F. blannicnft, p. 269. 



FIG. 89. Left foot of Falco biarmicus. x 



13. Smaller, wing under ll'O. 

 a. Thighs orange-rufous. 



'. Under parts whitish with broad brown 



streaks F. subbuteo, ad. p. 272. 



