Thanks for mentioning Mama Heating Pad. I'll never go back to a heat lamp, and right now I have 9 chicks being raised outdoors in the run. It snowed a bit yesterday morning and has been rainy and in the 30s all week. They are thriving!
I'll provide a couple of links just in case anyone wants to take a look.
There are a couple of videos of my chicks under their MHP outdoors, I think on page 4 of the thread, and then a few pages later again. I tried to get them on video at least once a week until they weren't using the pad and had been evicted into the main run and coop with the big girls, at around 4 weeks
This is my outdoor setup. Nothing more than a dog run, Mama Heating Pad on a frame, and some straw. Easy, easy! @16 paws I'm so glad that brooding outdoors was so successful for you, and like you, I love it!