Abnormal coloration in birds: Melanin reduction – Sibley Guides

Little Feathered Buddies coloration mechanics

The periodic coloration in birds forms through a prepattern of somite origin

Seasonal Changes in Colour: A Comparison of Structural, Melanin- and Carotenoid-Based Plumage Colours

What's in a name? Nomenclature for colour aberrations in birds reviewed

Surprising Animal Color Abnormalities

The periodic coloration in birds forms through a prepattern of somite origin

Colour vision in sengis (Macroscelidea, Afrotheria, Mammalia): choice experiments indicate dichromatism in: Behaviour Volume 157 Issue 14-15 (2020)

Body Color Expression in Birds

The dark side of birds: melanism—facts and fiction

Ciliary genes arl13b, ahi1 and cc2d2a differentially modify expression of visual acuity phenotypes but do not enhance retinal degeneration due to mutation of cep290 in zebrafish