Hopefully someone will know. I think I'm gonna buy two coolers, try the light lower in one, and see if it works. If not, I'll just do it like the tutorial says. They're only like $2, after all. But now I have a quick imprinting question - I read that if a duckling only sees humans, it will imprint strongly and never mate with another duck or live with them happily, but if it sees a human and sees ducklings, it will think it is a duck but may not stay friendly. What if I let one of the babies see me first, and only me, for a day or two, and then maybe introduce it to its siblings on day two or three, and then separate again? Will it be able to recognize itself as a duck in the future, so she can live outside with my other birds, but also stay very friendly? Has anyone ever tried this? If not, I may give it a shot.