My 16 Holderread ducklings are six days old today, plus one that I hatched myself a couple days later. I've never raised so many at once before, so I didn't realize how inadequate my rubbermaid brooder would be. Two nights ago, when I woke up, they were SOPPING wet and cold, even with two brood lamps. One has a gimpy leg and she had been unable to escape the wet and looked like a drowned puppy. It took her a couple hours wrapped in a towel sleeping under a very hot brood lamp before she could even lift her head.
I decided they'd be better off outdoors, where they have a large wire-floored brooder made out of an old rabbit hutch. It has plywood walls on three sides and hardware wire on the front. I put two 60-watt brood lamps against the back wall where it's sheltered by two plywood walls, and laid straw thick on the floor to prevent drafts coming up through the wire.
I planned to check on them every two hours. However, I had a rough night and ended up sleeping through my alarms. I woke up in a panic this morning, envisioning hypothermic ducklings breathing their last. The temperature outdoors was 43 F. I knew at least that Little Bit, the lame one, would be dead.
I threw on my robe and my barn shoes and ran out to the brooder. As I approached, I saw them in two heaps under the brood lamps, limp and quiet. But as I approached, one popped up her head, then two more, and before I knew it, they were all looking around and cheeping good morning. Even Little Bit was there, cozy in a pile, half-asleep but alert.
They weren't even uncomfortable.
Now. I'm not suggesting everyone run out and put their week-old babies outside in the cold, obviously. I'm just saying that apparently, I've been coddling them way too much! lol
So, that's my experience, for what it's worth. I do agree, though, that at least the first few nights or when it's going to be very cold, it's a really good idea to go check on them every couple hours, just in case--for one thing, electricity can cut out or brood lamps can burn out, and then you're in trouble.