As far as chickens (standard not bantam) does anyone wait until day 19 to lockdown?
Occasionally, if I'm busy. Usualy doesn't hurt anything. Though, if I'm a day late for lockdown when I have poults due, they anyways tend to surprise me and start hatching early. That's typically when I open the bator to move them to the hatcher and find a wide eyed poult staring at me from the bottom lol