Yellow-Tailed Black Cockatoo

A beautiful large parrot, this one's part of a large flock (a frenzy, perhaps) that visit the nearby gully every now and then. They like the gumnuts from the Eucalypts and the nuts from the pine trees. And they squawk loudly - very loudly.
They also like to feed on the bugs and grubs living under the bark of pine tree branches - mainly Aleppo and Norfolk.
When these guys go to town on a tree, it turns into a total bunfight.Their beaks are very powerful, and they rip the bark right off the branches. 
Standing near a tree the cockatoos are massacring is not a pleasant place to be. Besides the raucous noise, there's a constant shower of pieces of leaves, bark and branches raining down on anyone silly enough to be within range.
It's quite a sight, and while I feel for the trees being treated so roughly, you can't help but like the black cockatoos. Adorable is a little strong, but it's definitely within the ballpark; but cute seems a little weak and ineffectual.
Likeable rogues of birds would be pretty close; cheeky little buggers perhaps closer still.
But howsoever you prefer to describe them, they do put on a great show.