Are my birds to fat?

[mustangsaguaro]

Tonight while putting my birds away for the night I decided to weigh one of my Orpington pullets that is 6 1/2 mos old. I weighed her and she weighed in at 7 1/2lbs. She has a hatch mate also a pullet did not weigh her but suspect she weighs about the same. Will weigh her tomorrow morning. I know Orps are big birds. But to me this is huge. At her age and her weight I listed is this considered to fat? I felt around her keel bone and can almost feel what I think feels like a bit of fat around it. Her hatch mate has started laying eggs. Not sure why this one hasn't started yet. They free range during the day. I feed them about a cup of food/day plus I am sure they are getting bugs and what not while free ranging. Do I need to cut their amount of food back? I don't feed regular commercial layer feed. I mix my own grains and sprout them and that's what they get as their feed ration.

Thanks

 

[OldChurchEggery1]

What is her vent like? That's supposed to be a good indicator of if a chicken is too fat. On a white-skinned breed like an Orpington, if you notice a yellowish tinge to the vent area or it looks puffy-fleshed and narrow, she's likely too fat and that's why she isn't laying. I've never had a bird that was too fat but my mom had a few buffs that got very fat. She and my dad just quit feeding them any scratch grain and let them out in the yard during the morning and just fed them in the evening to bring them back in to the fenced coop area. At 6 1/2 months I'd expect an Orpington to be at point of lay unless it's one from a more exhibition than production line.