HERONS AND STORKS 



161 



walls being about a yard high. In this huge structure are laid the eggs, which are 

 comparatively small and bluish white in colour overlain with a chalky layer, the 





v !,' <ju4vi*.»As'. 



uJ. 



THE SHOE-BILL. 



blue changing to brown as incubation proceeds. Another remarkable type is the 

 hammer-head (Scopus umbretta), which, like the shoe-bill, is the only represent- 

 vol. in. — II 



