Description of the bird and its plumage

Hummingbird plumage color diversity exceeds the known gamut of all other birds

Back to Black: How Birds-of-Paradise Get Their Midnight Feathers

Bills' shapes

Feather Functionality – How Birds Use Their Feathers – Gilligallou Bird

Bills' shapes - Page 2

Peacock Bird Characteristics, Pictures and Symbolism - HubPages

Bird Spotlight: European Starling – Sunriver Nature Center & Observatory

Bills' shapes - Page 2

Bird Plumage Variations and Abnormalities

How Do Birds Take Care of Their Feathers?