EAGLES AND HAWKS. 41 



Genus VI. ACCIPITER. HAWK. 



Bill short, strong, its sides sloping, its upper outline 

 curved from the base, the edge of the upper mandible 

 with a prominent festoon beyond the middle ; nostrils 

 ovato-oblong ; tarsi rather long, compressed, with ob- 

 lique scutella anteriorly and on the sides, and oblong 

 plates behind; wings much rounded; tail long, even. 

 P. 229. 



HEAD OF ACCIPITER NISUS. 



1. A. Palumbarius. Goss Hawk. — Male bluish-grey tinged 

 with brown above, head brownish-black, lower parts wliite 

 transversely barred with dark grey. Female hair-brown 

 tinged with grey above, lower parts as in the male. P. 233. 



2. A. Nisus. Sparrow Hawk. — Male dark bluish-grey 

 above, reddish- white beneath, transversely barred with yel- 

 lowish-red. Female brown tinged with grey above, greyish- 

 white beneath, barred with dark grey. P. 240. 



