Hundred species of birds constituting the own circle of relatives Columbidae (order Columbiformes). Smaller bureaucracy are commonly referred to as doves, large bureaucracy pigeons. An exception is the white home pigeon, the image called the “dove of peace.”
Pigeons arise international besides withinside the coldest areas and the maximum faraway islands. About 250 species are known; two-thirds of them arise in tropical Southeast Asia, Australia, and the islands of the western Pacific, however the own circle of relatives additionally has many individuals in Africa and South America and some in temperate Eurasia and North America. All individuals of the own circle of relatives suck liquids, as opposed to sip and swallow as do different birds, and all pigeon dad and mom feed their young “pigeon’s milk,” the sloughed-off lining of the crop, the manufacturing of that's inspired with the aid of using the hormone prolactin. The nestling obtains this “milk” with the aid of using poking its invoice down the parent’s throat.