So, USPS royally messed up my shipment of fertilized campbells duck eggs. Today is 3/12 and they were laid on 2/28... so about 13 days old. The seller said to set them big end up so the air sack settles in the right spot for 8 hours and to let them come to room temperature. They've been in the NW Pacific in a box for the last 10 days, so cool weather but not below freezing. Thoughts on if any might hatch? I know its hard to say since shipping can be hard on them... are they too old?