I don't take them out. They stay until Tuesday morning (I am a wee bit early putting them in lockdown because I have to work tomorrow) Tuesday morning I take them out and take them to have their Marek's shot. This machine is very accurate... so I can be very certain, who does not make it by Tuesday morning would not have made it anyways. Everybody stays in the incubator until then.Thats amazing, when you have that many does it scare you taking some out when there is a chance a few of the 65 others could be pipped?