The mysterious whining animal in the wheat field in Hebei Province, commonly known as' Old Cow Cleisthenes', can only be heard by voice, but it is difficult to see its face. What animal is it?

According to the old man, this is a kind of bird. The snore is not the sound it makes, but the sound it makes when it sticks its beak into the ground. So no one has ever seen this kind of bird, because it is too rare and timid, and most of them make noise at night. I was lucky enough to see it once. It is about the size of an owl, with a small head and yellow feathers.

That's all I know.