MID-APRIL 65 
time they will learn to lay variously coloured 
eggs, so as to ‘ harmonize with their environ- 
ment,’ as Darwin puts it, and be thus the better 
concealed. The Turtledove’s nest is like 
PLATE XIX: Stockdove. Male (j size). 
that of the two preceding species, carelessly 
built of twigs, and flat, and it also lays two 
pure white but smaller eggs. Wild pigeons 
generally raise two broods each season, but 
B.N.—Il. F 
