SCARRY!
Glad you noticed in time to prevent disaster. Judging by the comments from others this was a very important subject to post.
In Alaska we loose a few barns a year to heat lamps, They do get hot, and they fall down or get knocked over. You can never be too careful or casual about a heat source. It's job is to get hot, and once it's hot it can become a problem.
Everything I've read said to use the red light, but I just used a regular (I think it's a 75 watt?) bulb and mine seem to be doing just fine. I did have to paint some Blue-Kote on the cochins toes cause everyone wanted to pick at them, but once I did that it was the end of the picking.
Your chicks are too cute, can't wait to have some like that running around here!
Michelle