KEY TO THE M'A'ri'.R lilKDS Ol" J I.OKIDA. 



Length, 28; ^Ving. i6: I')ilI,2 2o: Tarsus. 3. lo. Head 

 white; rest of plunia!;c t;rayisli. 



1 63 



Chen cierulescens. 



Blue Goose. Stc page 237 



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

 brownish; hill vellowish ; nail black. A line of 

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



American White=fronted Goose. 

 .See page 23S 

 Length. 26: U'ing, 13.50: I'.ill. 1.(0: i'arsus. 2.40. 



Head entirely black ; bill black. Branta bernicla. 



Brant. .See page 240 



SlBEAMILV L'^'CiXIX.E. Sw .\NS. 



Olor columbianus. 



Length. 53; Wing. 21.50; Bill. 4; Tarsus, 4.20. 

 Distance from front of tlie 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 240 



