LIST OF PLATES. 



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68 American Bittern 260 



69 Great Blue Heron 252 



70 Black-crowned Night Heron 264 



71 Mallard 256 



72 Green-winged Teal 258 



73 Blue-winged Teal 260 



74 Redhead 262 



75 Old Squaw 265 



76 Canada Goose 266 



77 Herring Gull (1) ; Common Tern (2) 270 



78 Loon 276 



79 Pintail (1) ; Pied-billed Grebe (2) 278 



