258 



MICHIGAN HIRD LIFE. 



Fig. 72 



KE. With but one distinct notch, separating the hooked tip 

 of the mandible from a single sharj), tooth-like pro- 

 jection just behind it. F, FF. 

 F. Five outer primaries emarginate near tij). Sharp-shinned 



Hawk. No. 135. 

 FF. Only one or two primaries emarginate. G, GG. 



G. Wing over 10 inches. Duck Hawk. No. 145. 



Possibly also the Gyrfalcon (Appendix). 

 GG. Wing less than 10 inches. H, HH. 



H. Back and tail bright rust-red, usually with 

 regular cross bars of black. Sparrow Hawk. 

 No. 147. 

 HH. Back and tail without any rust-red, usually 

 slaty-blue or brownish black, the tail with a 

 few (four or five) white cross-bars. Pigeon 

 Hawk. No. 146. Possibly also Richardson's 

 Falcon (Appendix). 

 DD. Cutting edge of upper mandible not toothed and notched (Fig. 

 72). I, II. 



I. Small hawks, wing less than 12 inches. J, JJ. 



J. With only two outer primaries emarginate near tip. 



White-tailed Kite. No. 132. 

 JJ. With more than two primaries emarginate. K, KK, 

 KKK. 

 K. With three emarginate primaries. Broad-winged 



Hawk. No. 141. 

 KK. With four emarginate primaries 

 (Fig. 73). Red-shouldered 

 Hawk (small males). No. 139. 

 KKK. With five emarginate primaries. 

 L, LL. 

 L. Tail nearly square at end, that is, 

 tail-feathers all of about the 

 same length. Sharp-shinned 

 Hawk. No. 135. 

 LL. Tail rounded at end, that is, 

 middle feathers longest and 

 each successive pair shorter, 

 the outermost being the short- 

 est. Coopers Hawk. No. 136. 



II. Larger hawks, wing 12 inches or more. M, 



MM. 

 M. Tarsus feathered to base of toes. Rough- 

 legged Hawk. No. 142. 

 MM. Tarsus feathered only part way down. 

 N, NN. 

 N. Tail deeply forked. Swallow-tailed Fig 73 



Kite. No. 131. 

 NN. Tail not forked. O, 00. 



O. Upper tail-coverts pure white. Marsh Hawk. 

 No. 134. 



