376 PIGEONS AND. SAND-GROUSE. 
Indies. In the male of this species the crown and upper-parts of the body 
are bluish, mostly washed with light olive-brown; the rest of the head and 
under-parts being cinnamon-buff, tinged with purple on the breast. The female 
is smaller, and has the under-parts brown like the back, but paler. Captain 
Bendire states that this bird is frequently found breeding in gardens and 
shrubberies near dwelling-houses, feeding in the barnyard among domestic fowls. 
Never occurring in large flocks like the passenger-pigeon, it is’ usually found in 
small parties of from six to a dozen or more, and in autuinn, previous to its 
migration, may be met with in flocks of fifty or sixty. It is fond of alighting in 
roads, where it may often be seen searching for suitable food or gravel, or taking 
a dust-bath, of which it is very fond. In the more arid districts of the West, such 
as South Arizona, where water is scarce, this dove, like the sand-grouse, visits 
regular watering-places in the morning and evening, to which it may be seen 
coming in small parties from all directions. The nesting-sites chosen are variable, 
and in some localities, such as the Carolinas, these doves nest chiefly on the ground, 
while they are said occasionally to lay their eggs in other birds’ nests. The old 
birds are attentive to their young, even long after they have left the nest, and the 
female has been observed covering fully-fledged young. As many as four eggs 
have been found in one nest, but whether these were all laid by one bird is 
uncertain. ‘The seven species of the genus Zenaida, inhabiting the West Indies 
and Central and South America, differ in having the tail only moderately long and 
rounded. The Zenaida dove (Z. amabilis) of the West Indies has the upper-parts 
brown, with some black spots on the wings, the chin white, the cheeks and throat 
rufescent, two steel-blue spots above and below the ear-coverts, and the top of the 
head, breast, and under-parts vinous. The quills are black, edged with white, and 
there is a conspicuous white band at the end of the secondaries. Rather solitary 
in its habits, it is never met with in flocks, nor does it breed in communities. Its 
food consists of small seeds, the principal part of its time being spent on the 
ground; and when flushed it flies off in a straight line much like a quail. The 
nesting-habits vary much in different localities. In the Bahamas they have been 
found nesting in the fork of a fallen tree about three feet from the ground, while 
other nests were in holes in rocks. Among the islands at Indian Key, the nest is 
placed in a small hole scooped in the sand, and is composed of dry leaves and 
twigs, with a matted inner lining of blades of dry grass, the whole structure being 
more compact than that of other pigeons. Writing of another,South American 
species (Z. wwriculata), distinguished by having no white tips to the secondary 
flight-feathers, Mr. Hudson says, that it “is the commonest species of the pigeon- 
tribe in the Argentine country, and is known to every one as the ‘ Torcasa, 
probably a corruption of Tortola, or turtle-dove. In autumn. they often congregate 
in very large flocks, and are sometimes observed migrating, flock succeeding flock, 
all travelling in a northerly direction, and continuing to pass for several consecutive 
days. But these autumnal migrations are not witnessed every year, nor have I 
seen any return-migration in spring; while the usual autumn and winter move- 
ments are very irregular, and apparently depend altogether on the supply of food. 
When the giant thistle has covered the plains in summer, incredible numbers of 
torcases appear later in the season, and usually spend the winter on the plains, 
