The Sunbittern, native to Central and South America, has markings resembling large eyes on its wings which it will show off when it feels threatened. : r/Awwducational
Bateleur Eagle - Wild Bird Background from Africa - Threat display of interesting pose Stock Photo - Alamy
Secretarybird - Wikipedia
When bird nests on the ground aren't a bad thing
Microraptor Threat Display – Emily Willoughby Art
Female Great Horned Owl Threat Display | #TBT There's a reason why Great Horned Owls are sometimes referred to as "tigers of the sky". Not only are they adept hunters, these birds
Microraptor Threat Display – Emily Willoughby Art
Microraptor Threat Display – Emily Willoughby Art
Greater sage-grouse sounds the alarm over shrinking habitat in US | Endangered habitats | The Guardian
The African Sentry Bird by SouthernNomad on DeviantArt
A most unusual bird | Back Yard Biology
Snipe threat display | Roads End Naturalist
Cassowary | San Diego Zoo Animals & Plants
Behavior - House Sparrow - Passer domesticus - Birds of the World