XXIX 



CRESTS OR TOP-KNOTS 



363 



twenty days old ; the crown was composed of ordinary 

 feathers. When the birds iight they try to pluck out 

 the feathers from each other's crown. Some years 



Dissection of the neck of a Crowned Crane showing the pharynx, 

 which is piiffeil out when the bird dances. (From a 

 preparation by Air. Burne in the museum of the Royal 

 College of Surgeons, England. ) 



A. Feather from the crown : it shows the spiral twist and 

 the thin hair-like barbs. 



ago a bad-tempered cock at the Zoo would not allow 

 the hen to have any feathers in her crown, and as soon 

 as they grew he plucked them. 



Cranes utter loud notes, which are increased by 



