Unlike birds whose plumage is mostly blue, the green coloring of a green bird’s feathers is primarily a combination of pigment and structure, not just a trick of the light. These birds’ emerald green, ...

Animals range in size, shape, and appearance. Some possess drab, plain-looking feathers, scales, or skin, while others sport ...

In late June and early July, groups of yellow-crowned night herons will begin to leave their New Orleans nests. First they ...

With its bright golden mantle and jet-black body, it would be hard to mistake the yellow-headed blackbird for any other ...

That's how jays get their bright, tell-tale blue appearance. The light-bending protein can also be layered onto other pigments: for instance, mixing blue light with underlying yellow carotenoids makes ...

In this span you should see male goldfinches in half-dress, with some bright yellow feathers and some dull gray. Individuals with no holdover yellow can still be identified by the wings. All ...

While many birds have basic brown or black bills, ... The Atlantic Puffin, which is nicknamed “the clown of the sea,” has a stunning beak that turns bright orange, yellow, ...

The Yellow Grosbeak is a robin-sized bird with a bright yellow head and body, black and white wings and a stout bill designed for feeding on fruiting trees in the foothills and highlands of its ...