Then, how about those little ducklings which have been Pipped forty-eight hours?
"Natural and Artificial Duck Culture"
James Rankin
About the twenty-fourth day he will be already to break the shell, but, unlike the chick, who will make his way out of the shell a few hours after he has Pipped, the duckling will lay for forty-eight hours before he is ready to come out.
"Natural and Artificial Duck Culture"
James Rankin