KEY TO TlUi WATJiR lURDS UI' J'LOKIDA. 



33 



Lengtli, 28; Wint;, i6 : 1)111,2.30: Tarsus, 3.10. Head 



white: rest of plumage grayish. Chen Citnilescens. 



Blue Goose. See page 105 



Length. 28: Wing. 16; Bill, 2; Tarsus, 2.90. Head 

 brownish: bill yellowish: nail black. A hne of 

 white at base of bill (adult). Anser albifrons gambeli. 



American White=fronted Goose. 

 See page 106 

 Length, 26: Wing, 13.50: l>iil, 1.40: Tarsus. 2.40. 



Head entirely black ; IhII black. Branta bernicla. 



Brant. See page to8 



Sii;f.\.milv CYGNIN.E. Sw ws. 



Olor columbianus. 



Length, S3; Wing, 21.50; Hill, 4: Tarsus, 4.20. 

 Distance from front of the eye to nostril longer 

 than from nostril to tip of bill. A .spot of yellow 

 on the lores in the adult; young birds gray. En= 

 tire plumage white. 



Olor columbianus. 



Whistling Swan. See page loS 



