Hi, i was wondering, when hatching chicks, what is the eariest they chirp, and what to look for when candling?

Once the chicks hatch they are capable of chirping. When you are candling the eggs you are looking for a web of veins that indicates the embryo is alive. During the coarse of the incubation the embryo will become apparent and grow in size. If you happen to notice a large dark pool in the side or bottom of the egg it means the embryo has died. With ducks and geese it is possible for the unhatched bird to make peeping sounds. Tons of fun too. Good luck.