I have had some run ins with barn swallows here in Iowa,so far it's only been one or two at a time and they seem to lose interest after a minute or two. Hawks are what worry me,my Mavic pro seems to resemble lunch to them.
I come from the world of flying r/c airplanes,you don't dare lose sight of your aircraft or bad things happen quickly. I have that so firmly ingrained my psyche that I can hardly look down long enough to change from video to stills.....lol
I just had to figure that out today on my own,couldn't see the check box until I brought it back down walked over in the shade. Video I shot with the warning box didn't focus either.