FAM. XXIX. EAWKS, EAGLES, ETC. 195 



E. Nostril circular and with a conspicuous central bony tubercle ; 2 

 upper mandible with a strong tooth and notch back of the hooked 

 tip. (J.) 



E. Nostril oval and the upper mandible without more than one lobe or 

 tooth, and that not a strong one.s (F.) 

 F. Tail about | as long as the wing. (I.) 

 F. Tail not over I as long as the wing. (G.) 



G. Outer web of the primaries with white, buffy, or reddish spots ; four 



outer primaries notched on the inner web ; * wing, 11-14| long 



11. Red-shouldered Hawk. 



G. Under parts white, very slightly if at all streaked ; upper parts 



nearly black ; Florida 16. Short-tailed Hawk. 



G. Not as above. (H. ) 

 H. Four outer primaries notched on the inner web ; * tail generally quite 



'■e'i 10. Red-tailed Hawk. 



H. Three outer primaries notched ; ^ wing, 14-18 long 



14. Swainson's Hawk. 



H. Three outer primaries notched ; wing, 9^-12 long 



15. Broad-winged Hawk. 



I. Wing under 9 long ; tail squares 6. Sharp-skinned Hawk. 



I. Wing, 8|-11 long ; tail rounded ' 7. Cooper's Hawk. 



I. Wing, 111-141 long 8. American Goshawk. 



J. Wing, 11-17 long ; only one primary notched on the inner web.^ (N.) 



J. Wing, 9;-lli long ; two primaries notched ; southern Texas 



30. Alpomado Falcon. 



J. Wing, 5-9^ long ; two primaries notched. (K.) 



K. Back or belly with more or less of bright brownish-red 



31. American Sparrow Hawk or Cuban Sparrow Hawk. 



K. Back bluish slate color, or blackish and without bright rufous .... 



28. Pigeon Hawk or 29. Richardson's Merlin. 



L. Tail gray, barred with blackish ; wing, 13-16 long ; common 



5. Marsh Harrier. 



L. Tail mainly white but much barred ; wing, 14-18 long; Texas 



13. Sennett's White-tailed Hawk. 



L. Tail zoned black and white ; extreme southwestern hawk with wing 



9|--12 long 18. Mexican Goshawk. 



M. Base and tip of tail white ; shoulders and tibia chestnut ; wing, 



12-15 long ; western 9. Harris's Hawk. 



M. Three white bands across the tail at base, tip, and center ; Texas 



12. Zone-tailed Hawk or 17. Mexican Black Hawk. 



M. Wing, 10-13 long ; Florida ; black phase of. . 16. Short-tailed Hawk. 



