It certainly doesn't help. I have had chicks had their heat lamp turned off accidentally overnight etc and been fine, though. I mean, deathly when discovered, but okay after some warming. I'm sure there's a line somewhere, though!
I mean technically if we're going by that she should order recessive/english whites/A&M - as long as they are advertised pure they should hatch out 100% yellow. ( I am just going to keep annoying everyone with genetics facts/corrections - tell me to fudge off at some point

).
BUT I think snowies/pearls are way prettier so I'm in 100% agreement that that's what
@Texas Kiki should order
Casper is...I don't know. I'm not hopeful. But I found him standing in the special yolk food mush? That's...something?