Bird colours

bright, cyan-blue colour

thumb|right|Leucistic white lions owe their colouring to a recessive allele. Note the eyes and lips remain the normal colour. Studies have shown that the reduced pigment comes from a mutation in the gene for [[tyrosinase, the same as causes Type I oculocutaneous albinism in humans.]] thumb|right|alt=All-white dominant white horse with pink skin, brown eyes, and white hooves.|This white (horse)|white horse owes its coloring to a dominant allele ([[dominant white).]] thumb|A leucistic rock dove. Both the eyes and legs are still of the normal colour. Leucism () or leukism, is a wide variety of co

off-white color that resembles ivory

{| align="right" |+ Cerulean as a quaternary color on the RYB color wheel | |- | |- | |}

color

color

Glaucous (, ) is used to describe the pale grey or bluish-green appearance of the surfaces of some plants, as well as in the names of birds, such as the glaucous gull (Larus hyperboreus), glaucous-winged gull (Larus glaucescens), glaucous macaw (Anodorhynchus glaucus), and glaucous tanager (Thraupis glaucocolpa).

color

Shade of blue

thumb|alt=Rufous-necked hornbill (Aceros nipalensis)|Rufous-necked hornbill (Aceros nipalensis)

thumb|upright|A piebald horse, Tobiano pattern

Fulvous (, ) is a colour, sometimes described as dull orange, brownish-yellow or tawny; it can also be likened to a variation of buff, beige, or butterscotch. As an adjective it is used in the names of many species of birds, and occasionally other animals, to describe their appearance. It is also used as in mycology to describe fungi with greater colour specificity, specifically the pigmentation of the surface cuticle, the broken flesh and the spores en masse.

color; tone of yellow

Icterine is a colour, described as yellowish, jaundice-yellow or marked with yellow. It is derived from Ancient Greek ikteros (jaundice), via the Latin ictericus. It is used as an adjective in the names of birds with yellowish plumage to describe their appearance, including the icterine warbler and icterine greenbul.

yellowish colour