Yesterday was hatch day for my 11 wellsummer eggs, this is my first time incubating. 5 pipped around noon yesterday and 1 hatched about 8:30 last night, since then there has been no other progress from the others that pipped, no zipping, and still 6 with nothing, is this normal? I am worried about the others but I dont know if I am just overreacting since this is my first time? I have read that once the first one hatches the rest usually follow pretty close behind, can anyone help please?