Semi-aquatic Habits 103 
The changes of plumage -which all the Harriers undergo, and 
especially the Marsh Harriers, are marvellous and not a little 
perplexing. The difference between the sexes too, as is well 
known, is very remarkable. An adult male Marsh Harrier with 
NEST OF MARSH HARRIER. 
its ash-coloured markings on wings, shoulders and tail is very 
beautiful. The adult female is quite a different-looking bird, rich 
chocolate brown in colour with a pale yellow crown; so very 
pale at times as to appear quite white. This is the plumage 
figured in the plate. 
