THE ANIMAL KINGDOM. 



269 



several ostriches lay their eggs together in the same ex- 

 cavation in the sand. Levaillant watched a whole night 



160. Nest of the Common Wren— Troglodytes mropams (Cuvier). — From the Koiieu 



Museum. 



in a thicket in (jrder to observe the manceuvres of these 

 birds, and saw four females betake tliemselves to the same 

 heap of eggs; "they relieved each other in succession," 



