The Eggs of Birds 445 



invariably white. Many indeed have such glossy, highly 

 polished shells that, were they laid in exposed situations, 

 their shining surface would be a sure guide to hungr}/ 



Fig. 353.— White eggs of Hairy Woodpecker in hollow tree. 

 (Bowdish, photographer.) 



egg-eaters. Among such birds may be mentioned the 

 owls, woodpeckers and parrots, trogons, motmots, king- 

 fishers and puffins, besides many others which hide their 



