Columbidae

Pigeons and doves constitute the bird family Columbidae that includes about 310 species.

Pigeons are stout-bodied birds with short necks, and short, slender bills with fleshy ceres. They feed on seeds, fruits, and plants. This family occurs worldwide, but the greatest variety is in the Indomalaya and Australasia ecozones.

In general, the terms "dove" and "pigeon" are used somewhat interchangeably. Pigeon is a French word that derives from the Latin pipio, for a "peeping" chick, while dove is a Germanic word that refers to the bird's diving flight. In ornithological practice, "dove" tends to be used for smaller species and "pigeon" for larger ones, but this is in no way consistently applied, and historically, the common names for these birds involve a great deal of variation between the terms. The species most commonly referred to as "pigeon" is the rock dove, one subspecies of which, the domestic pigeon, is common in many cities as the feral pigeon.

Doves and pigeons build relatively flimsy nests – often using sticks and other debris – which may be placed in trees, on ledges, or on the ground, depending on species. They lay one or two eggs at a time, and both parents care for the young, which leave the nest after seven to 28 days. Unlike most birds, both sexes of doves and pigeons produce "crop milk" to feed to their young, secreted by a sloughing of fluid-filled cells from the lining of the crop. Young doves and pigeons are called "squabs".

Picazuro pigeon

The picazuro pigeon (Patagioenas picazuro) is a pigeon native to South America.

Description

Patagioenas picazuro is a brown bird with white dashes on the back of its neck and darker brown wing patterns. It is similar in appearance to the spotted dove.

Distribution

The picazuro pigeon is found in Argentina, Bolivia, Brazil, Paraguay and Uruguay. It has an estimated global extent of occurrence of 5,800,000 km² and although an accurate population count has not taken place, it is believed that the species is common and the population is thought to be increasing. Picazuro pigeons survive in a variety of habitats; from woodland and forest to agricultural land.

Diet

This species feeds mainly on the ground and like most other pigeons eats seeds and grain.

Reproduction

Picazuro pigeons nest in every month of the year. A fragile nest is built from sticks and one egg is laid. Both parents incubate the egg. Once the egg has hatched, the chick is fed on crop milk and then regurgitated seeds.

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