47 
of which it lives the greater part of the year, only 
venturing as far inland as the nearest corn fields 
or other places where it may find suitable food- 
Asaspecies it is quite distinct from the Stock Dove. 
It was called Columba Invia on account of its lighter 
or more livid blue colour. It is pure white on the 
lower part of the back, and has two conspicuous 
black bars across the wings. Its voice, too, and 
its habits are very different from those of the 
Stock Dove. Itis supposed to be the species from 
which our domestic Pigeons were derived. It 
breeds in the Orkneys and Shetland Islands, 
building its nest in the subterranean caverns of 
those rocky coasts. They produce two pair of 
young in the season, each pair generally consisting 
of a male and female bird. The eggs are white, 
and of a short oval shape, rather pointed at one 
end. 
DOVE, STOCK. 
CoLUMBA AENAS, Lin. 
This species is a native of this country, but is 
found only in certain localities. It is common in 
Hertfordshire and some of the midland counties, 
but does not frequent the northern parts of the 
island. In its habits it resembles the Ring Dove, 
and is a constant inhabitant of woods, breeding in 
