I have a 2 year old African/Toulouse cross. This is her first year hatching out goslings. She is currently sitting on at least 11 eggs that I can see. The eggs have started to pip. I went out to check on her and I saw some of the straw making breathing motions. I got a stick and moved the straw to find a gosling that was unzipping. Mama was very quick to cover the egg again. Is this a normal behavior for them to cover the eggs as they are hatching? Will the baby be able to hatch successfully or will it be smothered? I'm trying to intervene as little as possible.