Glooglurb:

A rather silly name for a bird some might argue, but like the Moo, the Glooglurb is so called because of the strange noise it makes...constantly.

These tropical birds can often be found bumbling about the floors of rainforests and jungles in search of  Kreeps, a low flying insect that is often found gorging itself on the dead leaves that fall to the floor.

Glooglurbs eat nothing but Kreeps, and so have formed a rather twisted but mutually beneficial relationship with them. Kreeps can not help themselves but to gorge themselves so much so that they can not fly anymore and therefore become pray to many creatures, though none as numerous as the Glooglurbs. So by making the constant noise Glooglurbs provide a warning to the Kreeps, meaning they they can only go down to eat when they really need to. Stopping the entire species feeding itself into doom.

Pretty wierd but kinda makes sense.