Abnormal coloration in birds: Melanin reduction – Sibley Guides
Surprising Animal Color Abnormalities
Little Feathered Buddies coloration mechanics
Colour vision in sengis (Macroscelidea, Afrotheria, Mammalia): choice experiments indicate dichromatism in: Behaviour Volume 157 Issue 14-15 (2020)
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What's in a name? Nomenclature for colour aberrations in birds reviewed
Surprising Animal Color Abnormalities
PDF) Evolution of Diversity in Warning Color and Mimicry: Polymorphisms, Shifting Balance, and Speciation
The dark side of birds: melanism—facts and fiction
The dark side of birds: melanism—facts and fiction
Little Feathered Buddies coloration mechanics
The dark side of birds: melanism—facts and fiction
PDF) Cosmetic Coloration in Birds: Occurrence, Function, and Evolution
