I have 3 hens and a rooster. All are about 19 weeks old now. Bossy laid the first eggs. I found an egg on the ground under the tractor. Bossy was hovering over it as if to protect it from me. My wife posted the egg announcement on FB and I started looking for eggs in the nesting buckets. The next day, I looked into the nests and saw 7 more eggs. Bossy had been getting to work and I didn't even notice, even when I cleaned out the tractor. She has consistently laid about 6 eggs/week for the last 2 1/2 weeks.
A few days later, Agatha began laying green eggs. I was told that she was an Ameraucana, but apparently she is an Easter Egger. She has been laying about 6 eggs/week for the last 10 days or so.
Rosie is a Rhode Island Red and is bringing up the rear. Agatha left me an egg around lunchtime yesterday and Bossy left me an egg first thing this morning. Last night, when I was tucking the birds in for the night, I noticed an egg in a "poop tray" below their favorite roost. I grabbed it and there was no shell. Since I got an egg from both of the other chickens a few hours before and after finding the egg, I suspect this was Rosie's first attempt. Do chickens "misfire" on their first eggs sometimes? All birds have been eating feed supplemented with oyster shell. I think I will start crushing the egg shells and putting them in with their food as well.