We are in the grip of the mid-Atlantic heat wave w/ 100 or more days for the last week plus. Egg production has gone way down, and I just checked the nests when I locked up the coop and there was a very tiny (grape sized) egg. DH said that he thinks he cracked an egg today that didn't have a yolk. Could this be due to the heat? We've never had strange eggs before. Thanks for any words of wisdom.