8 Apr 2023: Day 8: everyone's doing well. Weights are now between 41g and 58g, with most in the mid-40s.
Mandatory pics:
Interesting to watch the flight feathers coming in. They all have at least some feather development here.
I was lucky enough that one of them let go with a big poop just as I was weighing them. For scale, this is about a dime in diameter, and a height of 2-3 dimes stacked. Dries to a flat black, but here you can see it's more of a deep dark brown.
Seems like most people only post poop pictures after something has gone horribly wrong, so I wanted to capture a baseline image of health.
The brooder. This is inside a bathtub in a mostly-unused bathroom. I've just finished cleaning it, so I'm about to re-insert the chicks. Then I'll cover the Mama Heating Pad box with an old towel.
Inside the box is a cheap heating pad; site gave its dimensions as 18.8" x 28.3". It has a high setting and a low setting and no auto-shutoff. The low setting maintains a skin temperature of about 45C. The pad slopes down towards the back, for a headroom of about 2" at the back and 6" at the front.
Overall room temperature goes down to about 25C at night, then up to 33C during the day. Most of this change is driven by the room lights, I believe; I also have a small lamp that I leave on all the time in there (there are not any windows).