Long-eared Owls have fluorescent feathers that glow under UV light. These hidden pigments vary by age, sex, and size.

Birds living in cities are usually more colorful and less brown. These colors help them survive better in urban environments.

Why is this pigeon pink? We break down the mystery — plus, birding experts advise what to do if you see a pink bird that ...

The avian world is a treasure trove of fascinating and often bizarre mating rituals. Explore the different types of bird ...

The Purple Grenadier is a colorful Eastern African bird with bright red eye spots and deep violet-blue feathers. This beautiful hummingbird, found in Central and South American rainforests, boasts ...

While there is an astounding variety of physical differences in wildlife that humans can easily observe, new research from ...