I found that fascinating...I raised approx. 200,000 - 300,000 turkey growing up.... I am a hunter, fisherman, and a late night radio listener.... birds are really really good at hearing. I could tell you stories ... nevertheless, here we have a wild predator hunting... next to a central air unit while its running... What if this bird is going nutso seeing things that aren't there as a result of the loud noise? being cocky and sure of him or herself they dont realize their senses are going haywire.... or instead i can only imagine this bird has exceptional eye sight. Still I am very surprised it is hunting like that so close to loud noise in a very dim situation.