My Polish can look a little spastic when they are startled, however, they are very curious. I have one that loves to be held, and another that follows me around and talks to me, but doesn't like to be picked up as much. The one that likes to be held (Stinker) is used to being carried everywhere, because for the longest time she couldn't see with all the feathers. My youngest will hold her, and I will trim her feathers. The first time we did this, she FREAKED out and started running in circles! I told my youngest to go get her and put her back in the coop. She doesn't act like that anymore, but I guess her first time being able to see was overwhelming. LOL...My silver Polish that I lost last October (Stubbie) was the one my son would ride his bike with. She was an amazing bird. My one Polish (Stinker) does lay the largest of all my eggs. Go figure, one of my smallest chickens. Her first egg was impacted though. However, we've not had any other problems.
Keep working with them, when something startles mine, they do run around a little crazy. They are a favorite at our house. I don't know enough about the hatcheries to offer any suggestions there. I got all my girls off of
www.mypetchicken.com . I don't know where their birds come from.
I have one Columbian Wyandotte, and she's gotten much friendlier the older she's gotten. She's a little piggie, and the freeze dried meal worms are a favorite!
Good luck!