my duckling internally pipped between 24-36 hours ago, he is still moving inside the egg, i havent heard any peeping from him though. he appears to be bobbing up and down, every now and then opening his mouth. i can see the scratches that hes made inside of the egg but im worried because its been so long since he internally pipped im worried that he will run out of air!! is this normal?? or should i do something to help?