Size difference in duck vs chicken eggs

The duck egg is on the left from a co worker, Avery's egg in the middle and the little egg from the first egg of Dakota or Tallulah. I'm going to have to do a steak out this weekend to see which chicken started laying! I noticed her egg got a little bit bigger in just 3 days.

Dakota lays her first egg!

Finally Dakota did it! She layer her first egg yesterday. I wasnt sure it was her egg but noticed she ran back into the coop after being let out at the crack of dawn and she walked up to the egg and made very funny sounds. This morning same thing crack of dawn there was egg #2

Still waiting for the 1st egg

Dakota and Tallulah

The girls are now over 6 months and no eggs yet. I have learned chickens will lay eggs when chickens are ready to lay eggs.