The Hermeus Chimera combined cycle engine (TBCC). This video shows it transitioning from turbojet to ramjet. Basically, this design will allow hypersonic flight without the use of traditional rocket propulsion. Total cost = $18 million (USD)

I found this bird called a razorbill. They nest on cliffsides and dive into the water to hunt when they're 20 days old, before they're even capable of flight.

"During courtship displays, males hold their bills vertically, appearing to contemplate the heavens."

Actual chads of the avian class.