What's that blue bird? – RUFF

Tree swallows and bluebird

Ruff bird orgies have four 'sexes' thanks to a supergene flip

Male ruff BirdForum

Ruff - Facts, Diet, Habitat & Pictures on

Ruff (Philomachus pugnax). Birds of Ukraine.

The ruff - not so ridiculous after all!

Rare bird migrating scheme for ruffs at Norfolk farm

Male Ruff (bird) in breeding plumage stands on the shore of the lake Stock Photo

Chromosomal inversion determines male morphs in the ruff

Focus On: Ruff – the great pretender - BirdGuides

Ruff (bird) - Wikipedia

Ruff - eBird

A Smooth Trip for a Ruff