Ohap. XIII. 



Vocal Music. 



373 



It seems now well made out that the great throat pouch of 

 the European male bustard ( Otis tarda), and of at least four 

 other species, does not, as was formerly supposed, serve to hold 

 water, but is connected with the utterance during the breeding- 



Fig. 40. The Umbrella-bird or CephalopteruB ornatiis (mal^', from Brehm'J, 



season of a peculiar sound resembling " ock."*^ A crow-like 

 bird inhabiting South America (Cephalopterus ornntus, fig. 40) is 

 called the umbrellarbird, from its immense top-knot, formed of 



*^ The following papers liave In this latter paper an excellent 



been lately written on this subject : figure is given of the male Austra- 



Prof. A. Newton, in the ' Ibis,' lian Bustard in full display with 



1862, p. 107; Dr. CuUen. ibid. 18K5, the sack distended. It is a singular 



p. 145 ; Mr. Flower, in ' Proc. Zool. fact that the sack is not developed in 



Soc' 1865, p. 747 ; and Dr. Murie, all the males of the same species. 

 in ' Proc. Zool. Soc' 1868, p. 471. 



