They have to be tough. This is a time where there are some awe inspiring predators. Every time hesperornis go on a fishing trip, they have to enter the deadliest sea of all time
— Allen, on Hesperornis
Hesperornis (name meaning "Western Bird") is a genus of large, prehistoric, aquatic flightless diving bird that originated during the Late Cretaceous. Due to its design, it was cumbersome on land but was a fabulous swimmer.


Era & DiscoveryEdit

Hesperornis lived during the Late Cretaceous period 75-65 million years ago. The first Hesperornis specimen was discovered in 1871 by Othniel Charles Marsh.

Physical AttributesEdit

Hesperornis was a species of Cretaceous sea birds that measured over 6 feet (2 meters) long and looked similar to penguins. They were flightless, like penguins, but they were far from as cute. Inside their dagger-like bills, they actually had teeth. But just to hold their own, Hesperornis had to be tough because they were around a time where there were truly awe-inspiring predators in the seas.

Behavior & TraitsEdit

Hesperornis spent most of their lives in water. They were amazingly adapted for diving, with specially heavy bones to help them stay submerged. But few Hesperornis lived to a ripe old age, because where they were from, there are so many ways to get eaten.