When white light strikes a blue feather, the keratin pattern causes red and yellow wavelengths to cancel each other out, while blue wavelengths of light reinforce and amplify one another and ...

Their eye-catching black and white mottled pattern makes them stand out in ... Black-laced Andalusians are elegant chickens ...

Females have the same general color pattern as the males, but with yellowish heads and gray-white feathers ... as well as a ...