2l6 



ROLLERS. 



friction against the walls of the narrow tunnel leading to their 

 nest. Occasionally they will build in the deserted burrow of a 

 cavy or armadillo. 



Dr. Azara describes some of these birds kept in captivity as 

 heavy and stiff in their movements, shuffling along on the ground 



Fig. 114. -The Motmot {Piionlles moinoia). 



by sudden and oblique leaps, with their legs very v;ide apart ; 

 their tail was in constant motion. They were fed with bread and 

 raw meat, the latter of which they preferred. If a small bird or a 

 mouse were let loose in the chamber in which the motmots were 

 kept, they would pursue it in a determined manner; and when 

 possessed of their prey, would strike it violently against the 

 ground with their bill. This did not appear to be done merely 



