Last year we saw a HD show all about humming birds. If you can catch the full 60 min show it's a great watch
They are quite amazing. We hung a few feeders around the house and now we have regulars and they become quite tame. The regulars and now protecting their feeders and chase off other humming birds. We were watching one chase another and this guy flew into the window right In front of us and knocked him self out. It looked like he broke his neck. He was on the ground twitching. We went out and wrapped him up in a paper towel and bright him inside to warm him up, it was mid 30's outside it looked like he broke his neck and he was gonna die. After about 15 mins he seemed to be ok. We brought him to the window and he wanted to Fly so we opend it up and he flew away. He was back at the feeder 15mins later and seems less afraid of us.