i have a flock of 21, 13 pullets, and 8 older hens going on 2yrs old . i been getting 15 eggs a day lately , i got 18 last friday and a couple other times this month. i have a light in the coop on a timer been useing it since october. come spring i might weed out the older ones that arent laying. i guess the only way to find out who is laying is to put a camcorder in the coop. lol.