im using a home made incubator i thought everything was steady but had some fluctuation in temp and the humidity was low untill about the 12th day. there is still movement in the egg and i can still see the veins at the top near the air pocket. the egg is a rhode island red. i put it in the incubator on 5-20-11 so today is day 22. i have a rir-sildie due to hatch tomorrow and 6 more on sunday. just wondering if i should knock a hole in the egg on day 22 or how long i should let it go.