The Rock Dove (Columba livia) or Rock Pigeon is a member of the Columbidae family.
It is the most widespread bird in Europe. The domestic pigeon (Columba livia f. domestica) is a domesticated form of this species. This form can be found close to the human settlements. There are 15 subspecies.
It has a small, round and mobile head. The lower part of the beak is formed of prolonged toothless jaws covered by a horny sheath of skin.
The pigeon has a spindle-shaped body. The body is covered with feathers, down feather and fluff produced by the skin. The root of the feathers is thrust in the skin.
They live in pairs and build the nest in which the females lay their eggs. Both parents take turns incubating the eggs. The chicks have their eyes closed, are featherless and powerless, so they cannot fly.
Pigeon is a granivore bird; it means that it eats seeds and cereal grains, leguminous plants and oilseeds. It eats them in different quantities depending on season, utility, physiological state.
The pair remains together for their entire life. The chicks get out of their eggs after 18 days of hatching; they are blind and covered with yellow fluff. Pigeons feed their chicks with a milk-like substance prepared in their crop.