Weighed a few 3 month olds. The littlest pullet who is a normal size weighs 13 oz. The largest pullet (LF project) weighs 1 lb 9.75 oz.
I was going to find a few silkies at the big swap in Oregon today to add new blood. I'm a bit paranoid since there was a couple flocks in in SW Washington that tested positive for avian influenza. The show later this month was cancelled as a precaution. I'll just wait and try at the late November show.
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Kinda nice to see that there are precautions about AI -- or any other known affliction in the general area. I think you've got quite a bit on your plate with your present flock -- which look healthy and gorgeous. Keep them safe with ultimate precautions.