This first came out over a year ago but it seems to be making the rounds again and I’ve just seen it for the first time. Watch how this Southern White-faced Scops Owl reacts to two different predators.
NOTE: the YouTube video to which this post originally linked has been removed from the site; I swapped in the clip below on 09-FEB-11
The first reaction occurs at about 1:00 and the second, more interesting, starts at about 1:40.
Read more here. NOTE: link also updated 09-FEB-11