THE CURASSOWS AND GUANS 



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which, such as the curassows, are nearly as large as turkeys, while others, like cer- 

 tain guans of the genus Ortalis, are considerably smaller than the common pheas- 

 ant. All the species have a long and well-developed tail, and in the males the 

 windpipe is long and convoluted, and, as one would expect, their cry is very loud 

 and harsh. They differ from the megapodes, not only in their osteological 



CRESTED CURASSOWS. 

 (One-fifth natural size. ) 



Structure, but also in having a tuft of feathers on the oil gland. Moreover, their 

 nesting habits are different, the eggs being incubated by the parent in the ordinary 

 manner, though some of the species habitually nest in trees, and la}'' white eggs. 

 "When first hatched, the young are covered with a patterned down, like the chicks 

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