524 THE PIGEONS 



The duties of nest-building, incubation, and the care of the 

 young are, as in the other species herein described, shared by both 

 sexes. But the nest, as a rule, is a very flimsy structure, though 

 Seebohm says that occasionally it is much more compactly built. As 

 in the case of the wood-pigeon, it is never placed in holes or burrows 

 in the ground ; but while the wood-pigeon always places its nursery 

 high up, this is by no means true of the turtle-dove, which is often 

 content with low shrubs, or a high, thick hedge, as a lodgment for its 

 cradle. Occasionally, however, it will select the boughs of a tree forty 

 feet from the ground. 



