Wow that tag feature is handy!
We lost two more yesterday afternoon. But 2 pullets and the roo are still plugging along. 1 pullet is acting perky and dashing around like nothing happened. The crops on the other two aren't very squishy now and they are still standing still and not very active but more they are occasionally moving about and singing. Which is WAY more than they did yesterday. I'm feeding them scrambled duck egg for now and offered some chick grit in it. I figured out what happened- they were being fed out of the mixed food all the other birds get fed (it's flockraiser mixed with whole and cracked grains). They have never been offered grit and they haven't been on the ground (just in my coop in a large dog kennel crate). I am guessing they have been eating this food for a little more than week. whole grains in crops devoid of grit in chicks. Nice attentive chicken mom.

I feel so awful. I have begun adding my 7 yo daughter in the chore loupe the past month and I think that's where the breakdown started happening. She had no idea they couldn't have whole wheat, oat etc grains.