Scientists discovered that scissor-tailed nightjars create strange courtship sounds by snapping the bones in their wings ...

The post The Birds with Built-in Weapons in Their Wings appeared first on A-Z Animals. Horned screamers, the official bird of the Department of Arauca and the Municipality of Arauca in Colombia, could ...

Compared to other birds of their size, these guys have a remarkably lightweight bone structure. Most of their bones and subcutaneous tissue contain air sacs, allowing them to remain in the air without ...

Then, the wing flapping starts! The birds continuously flap their wings, pushing their shoulders forward, exposing their bony spurs. It’s the bird equivalent of pulling back your jacket to show an ...