Leucism is characterized by reduced pigmentation, resulting in an individual with white or brighter patches of fur, plumage or skin than in the typical representative of the species. The phenotype may be inherited, or due to a mutation during the individual's developmental phase, but in many cases it is due to lack of proper nutrients. Some types of leucism are called partial albinism. F.e. some urban crows[1] exhibit this phenotype. The variations in feral dove's plumage exhibit the hereditary traits. In biology, pigment is any material resulting in color in plant or animal cells which is the result of selective absorption. ... The phenotype of an individual organism is either its total physical appearance and constitution or a specific manifestation of a trait, such as size or eye color, that varies between individuals. ... This article has been identified as possibly containing errors. ... Embryonic stem cells differentiate into cells in various body organs. ... Nutrients and the body A nutrient is any element or compound necessary for or contributing to an organisms metabolism, growth, or other functioning. ... Young woman with albinism from Malawi. ... Species See text The true crows are in the genus Corvus; they are large Passerine birds. ... Binomial name Columba livia Gmelin, 1789 The Rock Dove (Columba livia), or feral pigeon, is a member of the bird family Columbidae, doves and pigeons. ...