390 



Key to Plate No. 1 Plate No. 1 



(A) MUTE SWAN, adult. Sexes alike. 



(B) MUTE SWAN, juvenile head. 



(C) TRUMPETER SWAN, adult. Sexes alike. 



(D) TRUMPETER SWAN, juvenile head and foot. 



(E) WHISTLING SWAN, adult (showing yellow spot on lores). Sexes alike. 



(F) WHISTLING SWAN, adult head (showing lack of yellow spot on lores). 



(G) WHISTLING SWAN, juvenile. 

 (H) Typical adult Swan wing. 



Text. Mute Swan, page 66: Trumpeter Swan, page 77; Whistling 

 Swan, page 69. 



