I am curious, too, about how to know if your chicks are too thin and/or getting enough to eat. All my 23 11-week old chicks act healthy, but I notice that the lower ranking chicks don't even attempt to eat until the New Hampshires and brown leghorns have left the coop. If they approach the feeder when everyone else is first eating, they get chased off, mainly by the leghorns - though I have 4 little feeders so the low-ranked sometimes gather around one of them - but 1 or 2 seem discouraged enough to just stay back. But, all the chicks have prominent breast bones and feel skinny to me when I pick them up. I figured they are just growing, and this must be normal. The one thing that has concerned me is that I see a fair number of feathers in the coop - these are my first chicks- and I don't understand why they would be losing feathers at this age, unless maybe there is a nutrition problem. They eat chick starter (20-21% protein) - measured quantity, but they never clean up the dry feeder completely - and they have free range access to ungrazed pasture land most days.
My 15 chicks are 12 weeks old tomorrow and the coop is sprinkled with a lot of white feathers. So I know it is coming from all of them. A small molt maybe?
