well

[Dutchboy]

Here's another variable to think about. Birds like Bobwhite quail vs. something like a Blue Grouse. One's known to be "fragile", one's used to far more cool conditions.

I've seen Blue Grouse just about fresh from the egg. Lots of feathers there, not much fluff. They look to me far less susceptible to moisture and cold (which should be obvious, given that they will experience frost after hatching). FWIW, Dutch.