Synopsis of Orders and Families. 



Order XII. Yttltures, Hawks, and OWls. RAPTORES. 

 (4 families, 56 species, 33 subspecies.) 

 Generally large birds with hooked bill; strong, heavy feet, and long. 

 curved nails : wings large; tail rather long, usually square. 



TURKEY VULTURE. 



Family 35. AMERICAN VULTURES. CATHARTID^. 



Bill not strongly hooked; toe-nails comparatively weak; nostrils large, piercing 

 the bill; head and more or less of neck, bare. 



RED-TAILED HAWK. 

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