92 



BLBMBNTS OF OENITHOIOGX. 



(Ootinga ecerulea) of Cayenne. This last is a type of a group 

 of some hundred and ten species to which tlie Cock-of-the-Eock 

 and the Umbrella- and Bell-birds also belong — a group known 

 as the Cotingidce. 



Yet another exclusively South-American Bird is, as we shall 

 hereafter see, of extraordinary interest, owing to its exceptional 

 structure, and the divergence of opinion which has existed, and 



Fig. 95. 



The Umbrella-bird {Cephalopterus ornafus). 



exists, as to its true affinities. This is the Hoatzin {QpisChocomus 

 cristatus, fig. 97), which inhabits Guiana and the immense Valley 

 of the Amazon. When hatched, it has two well-developed 

 fingers, each with a claw, and is said to creep about on all fours 

 like a Quadruped. 



The curious and rapidly disappearing Huia-bird of New Zea- 



