seramas are a land race technically- not a recognized breed- so the weights are still fluid. A good one should be bewtween 12 oz and 16 oz at maturity .Many are larger.But that is not all bad in the girls since a bigger hen will be more likely to lay a better egg. Some of the tiny tiny girls don't lay at all or lay an egg that is not viable. Mine have laid pretty well overall , but individuals may not be that great. I have had them go broody really well. Too well even. I got mine from Luann Keller and frank (ae50mag) mostly as well as one other person who is not a member here and I can't recommend. If you are near the upstate of SC I have lots of little roos that need homes- and 2 pullets even that need to go.For BYC'ers I will give away the roos- and there are plenty-LOL. I think I hatched 5 for every pullet. I am done hatching from my stock this year except where the girls are setting their eggs themselves. I have no clue how m uch they eat a month- I guess 1/4 c. to 1/2 c a day, they are pretty friendly - though I have one roo that hates me. HE is fine if he is out on the ground- but in his little pen with his hen- he is territorial. I really like them and have a few "on order" with Luann.