User blog comment:Kogath/Monster Hunter 4 Ultimate for the Nintendo 3DS/@comment-184612-20140213222512/@comment-4009941-20140214170351

The new bird sound was show in the Desert and Roadrunner birds are in the list of bird with feet like that. So if anything I vote a roadrunner related monster.

http://en.wikipedia.org/wiki/Geococcyx

They eat Snakes, Lizards, Scorpions, Mammals, Tarantulas, other birds and other bird eggs and more. Also they get their name for fast running speed even though they can fly very good as well. I know this type of bird personally from seeing them from time to time.

I think Roadrunner based monster is more safe to say.