Continue to explore new Dino Dossier of ARK Survival Evolved game now! Hesperornnis will be the next new creature that will appear in the ARK world. You will see that this animal is like a half duck half dinosaur with the medium size. This bird usually absorbs fish and primarily lives in the rivers or lakes on this island. Hesperpornis often floats on the surface of the water, and it is extremely quick on the water. You can domesticate it and keep it to produce the particular eggs that have two distinct substances, protein and liquid. You can use those substances for the later usage if you need.