I honestly have no idea on how old they were. The sales lady at the feed store wasn't 100% sure when they were hatched, but they were complete little fuzzballs w/no pin feathers. I've had them now almost 3 weeks (Friday will be week 3). They've doubled in size. I have a 200watt heatlamp right above their tote & it's on 24/7. There's a box on it's side that they're using as a coop & that's where they sleep at night. They seem to be very healthy & fat.. you cannot feel their breastbone at all & I know that in canaries & psittacins that's what was important. But it's not like I'm planning on eating them!!