Appendix. 



white. A rather rare winter visitor in the 

 valleys and foothills. 



24. Golden Eagle; Aquila chrysaetos (Linn.). 



Length, roughly, three feet. General color 

 brownish black. The young have the inner 

 half of the tail white. This species always has 

 the feet completely feathered, while in the bald 

 eagle, which is of about the same size, the 

 lower half of the feet are naked. Locally 

 fairly common and breeding both in the Coast 

 Range and the Sierra Nevada Mountains. 



25. Bald Eagle; Haliaetus leucocephalus (Linn.). 



Length of male thirty-two, of female thirty-eight 

 inches (average). Adult, head, neck and tail 

 white; rest of body dark grayish or blackish 

 brown. The young birds are nearly black in 

 color, with some mottling of white. They 

 change gradually to a brownish color mottled 

 with white and buff, and not until the third or 

 fourth year is the head completely white. Gen- 

 erally distributed in the wilder and more remote 

 portions of the State, both on the coast and in 

 the interior. 



26. Prairie-Falcon; Falco mexicanus Schleg. 

 Length about eighteen inches, male averaging 



smaller and female larger than this. Upper 

 parts grayish brown, the feathers with buffy or 

 whitish edgings; under parts white, spotted with 

 rather small brown darts, the sides barred with 

 brown ; throat pure white, bordered with a dis- 

 tinct line of brown; wing-quills and tail like 

 back, the former with numerous large white 



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