Re: 90 - we have had Barn Swallows get so close to us during nest checks that we can feel the air moved by their wing beats as they fly by our ears.
They also have good memories. We proved that by having someone other than me walk about 100 feet from their nests. Some loitered in the area but mostly quiet. When I walked within 100 feet - they had a strong challenge response - alarm calls, some diving, etc. - as I am the garish two legged creature checking their nests!
Barn Swallows always build in the low rafters in the bottom of our barn. They can get pretty aggressive when I walk through there to get to the dog kennels.
I’ve been pecked a few times, but I now wear a hat...because I’m a quick study. ;)