I have a 4 month old Isa Brown and she has been laying 2 eggs a day. I get about at least 2 double yolk eggs a week! Sometimes three! Some are also fertile. My two questions are: Is this a good thing she is laying double yolk? Anyone ever try to hatch a double yolk egg? And the rooster is a Bantom Old English/Bantom rooster. I have heard that cross breeding can cause defects. I dont want to hatch their eggs if cross breeding is a bad thing. Is this a true fact? Okay thats three questions. Thanks in advance!