1 green, 3 brown (2S,1L), 1 brown cannibalized (L)
5 green, 25 brown past week
2 green, 9 brown past 3 days (5S,4L)


So I decided to track brown eggs by size going forward. I think I'll see that all the old hens are laying, just not at full production.

Earlier I looked at the weekly production data, arbitrarily said the young hens are producing 18 eggs per week (4.5 per hen) so old hen production is 6-10 eggs per week or 1.5-2.5 eggs per hen per week. That would put the older hens laying cycle at 2 days 19 hours to 4 days 16 hours.