98 TALKS ABOUT BIRDS 



or a sparrow's, the hind toe being large and 

 strong. 



Of course there are exceptions to these 

 rules ; sometimes a bird which seems meant to 



live and make its nest on the ground will nest 

 up in a tree, as I mentioned was the case with 

 the Muscovy duck, but this duck comes from a 

 hot climate, and most wild ducks in such 

 countries build up in trees, perhaps from fear 



