They have green wings that seamlessly transition ... It almost looks like an artist painted their feathers. These parrots got their name from their strikingly red-colored heads.

Sparrows may be small, but their beauty is undeniable! Discover the most stunning sparrow species across the globe, each with ...

Alteration of the expression of the co-called 'Sonic Hedgehog' gene can transform feet scale and wing feathers. While a transient over-expression of the gene can permanently turn feet scales into ...

Some individuals may have a solid-colored dark breast ... Adult has pale wing linings and flight feathers contrasting with dark primary tips, a wide dark band along the trailing edge of the ...