X CONTENTS 



Family Anatidae — Continued. ^*se 



Whooping swan 278 



Habits 278 



Distribution 280 



Cygnus colunabianus 1 281 



Whistling swan 281 



Habits 281 



Distribution 292 



Cygnus buccinator 293 



Trumpeter swan 293 



Habits 293 



Distribution 300 



References to bibliography 303 



Explanation of plates 312 



Index 373 



