AN AUSTRALIAN BIRD BOOK. 83 



168 Gray Falcon, Blue (Smoke) Hawk, F. hypoleucus, A.. 



=vt. Eur. Gyrfalcon. v.r. timber, plains; f., 17; m., 12 

 "Rare beautiful falcon;" bluish-white below; grey 

 above; tail barred gray, brown. Birds. 



169 Black Falcon, F. subniger, A. v.r. plains (inland) IV 

 Dark, sooty-brown, paler below; chin whitish; f., larger. 

 170*Little Falcon (White-fronted), Duck Hawk (e), Aus- 

 tralian Hobby, F. lunulatus, A., T., r=vt. Eur. 

 Hobby. Stat. c. plains; f., 13.5; m., 11.5 



Forehead white; upper grayish-black; cheeks black; tail 

 barred gray, chestnut; throat buff; chest reddish-buff, 

 striped dark-brown; under, thighs reddish; incom- 

 plete whitish collar; f., larger. Birds, insects. 



2 171 Striped Brown Hawk (Western, Orange - speckled), 



3 Hieracidea berigora, A. v.c. swampy, plains 17 

 Upper dark-brown; wings spotted reddish; incomplete col- 

 lar, under buff-white striped dark-brown ; throat whit- 

 ish; naked skin round bill yellow; tail barred dark- 

 brown, gray; f., larger. Caterpillars, insects, birds. 



172*Brown Hawk, H. orientalis, A., T. Stat. v.c. Umber 17 

 Head, upper dark-brown; line over eye, throat buff; 

 under buff spotted rust-brown; tail brown barred rust- 

 red; Skin round bill bluish; f., larger. Food as 171. 

 1 173*Nankeen Kestrel, Windhover, Mosquito Hawk, Spar- 

 28 rowhawk (e), Cerchneis cenchroides, A., T., N.Z. 



=vt. Eur. Kestrel. Stat. v. c.timber, plains 11.5 



Upper cinnamon-red, spotted black; tail rufous, faintly 

 banded black above, tipped white, then black bar; 

 side neck, throat, abdomen, under tail white; chest 

 buff striped black; f., larger. Insects, mice. 



