Well, apparently even when living in the middle of a city I can't stay away from chickens. I'm in the middle of the design process for a new incubator, and I'll document it here, along with perhaps a few CAD models. I'll be hatching geese, ducks, and chickens, the first of which will be entirely new for me. They will be going to a new home immediately after they hatch, but I'll be able to document and optimise the process which really is the fun part.