Mine are 2 1/2 weeks. Since they arrived I've been giving 'em finely cut up lettuce and spinach from the garden (now adding clover and just plain old grass) boiled egg yoke and whole wheat spaghetti. They were not fond of the egg yoke at first but hae developed a taste if it's mixed with one of the other two. Tonight I gave 'em all three mixed together. That went over great. Been giving grit from the start too.