the change was pretty sudden, ran out of grower and since they were laying just changed over to pellets. They had been eating crumbles and now being served pellets as that is all they sell here. The feed looks and smells fresh. They are pooping like before but not eating except what I supplement (cabbage, watermelon, cooked eggs) I don't know how to examine their crops. Explain please. I am a first time backyard chicken owner. I meant to say they were barred rocks, not buff. The stores here don't sell layer crumble but am having one place order them, although a different brand so hoping that works. I did try to pound the pellets into crumbles with no success of them eating it. Thanks for the help.
The crop is in front of the breasts, a little right of midline and should be full before they go to roost. But with all the supplemental food you are giving them and normal volumes of poop, I'm sure their crops are quite full and they are getting calories.
Likely the abrupt change in feed is the problem. It would be best to continue crumbles, get crumbles layer feed, if they refuse it. Then get a bag of the starter crumbles and mix the two together. Start with 25 % of the new feed, after a few days increase to 50%, after a few more days 75 % and then to 100 %. Mine transitioned quickly and after just a few days I just made the switch and they never noticed. If you want to later go to pellets, make the same slow transition. *** While doing the change, offer oyster shells so they get the extra calcium they need.
Assuming these are all pullets, you don't need grower feed.
And while doing the change, stop the human food supplements or at least limit it to small amounts, they will fill up and not eat the feed they need. If they are hungry, they will eat whatever you give them. But for tasty treats, they will go after those and not have room for the feed.
Unless you watch them constantly, you may not notice whether they are eating the feed, so checking their crops late afternoon can tell you what you need to know.
Hope this helps.