I have 8 layers in 1 coop; 8 layers in a 2nd coop ( some of which are close to 3 years old); & 4 young layers in a 3rd coop.
Only 1 Black Penedesenca was laying, she has stopped since I switched her coop a couple of weeks ago. I don't think the new coop gets as much light as the old coop. I have 3 white leghorns in that same coop, they were laying when I first got them,at Christmas, but have stopped since I moved the Black Penedesencas in there. This coop has no added light.
I have 5 EE & 2 RIR & 1 (not to standard) Black Penedesenca in a second unlighted coop. In the 3rd & oldest coop I have 2 Black Austrolorps, 3 Iowa? Blues ( I can't remember what the first part is, but they are black hens) (1 of the Austrolorps & all 3 Blues aren't laying yet that I know of). In that coop I also have 6 RIR, some of which are really backyard mixes (RIR/Black sex link), some of these hens are 3 years old.
I got 5 eggs today.