Von der Decken's Hornbill
Female (left) and male (right) Von der Decken's Hornbills. These buggers rank right up there with biggest trap pests. Normally when I get pestered by something, I just trap it and let it go after terrorizing it a bit with some mean noises, and it won't come back for the rest of the day. The hornbills, on the other hand, return in a matter of minutes. They're either incredibly stupid, or surprisingly smart.