62 



BIRD WORLD. 



the mother bird may be large, as in the case of the 

 heron, so that the platform must hold her as well as 

 the eggs. Here is real building to be done ; sticks to 

 be laid in a more or less clever fashion. In a later 

 lesson we shall see more of the ways of bird 

 builders. 



Fig. 8. — a, Egg of Canada Jay; b, of Crow Blackbird; c, of Woodpecker. 



