Pigeons and doves are of the order Columbiformes
and the family Columbidae. They are found throughout the tropical
and temperate zones. There are 290 species, including the doves.
Their long wings and powerful flight muscles make them strong,
swift flyers. They are small headed, short-legged, swift-flying
birds with pointed wings and fanned or tapered tails. Females
are duller than males. All species coo; bob heads when walking.
Pigeons are monogamous; which means they mate for life. If one
bird dies, the survivor accepts a new mate slowly. Pigeons eat
grains, small seeds, acorns and fruit. Nests are generally in
trees; eggs, usually 2, are white. The female generally incubates
by night, the male by day. The incubation period is 14 to 19
days and the young are cared for in the nest for another 12 to
18 days.
The fruit pigeons (14 inches) of the Polynesian
islands (genus Ptilinopus) are brightly colored tropical forest
dwellers. The top of the head is often violet, and the rest of
the color pattern consists of softly blended pastel shades of
green, yellow and lavender. They feed on fruits and berries,
rarely coming to the ground.