Hi Amy!
Sorry I fell asleep on ya last night.
Eating and drinking are good signs! A sick chicken will often pass those things up. I'm glad you aren't seeing a prolapse issue. Those look scary, eh?
The crop SHOULD be empty each morning. They go to bed with a full belly aka crop, and it digests through-out the night. Perfect way for us subchicken levels to figure out if the crop is working well. Full at night, mommy's delight! Full in the morning, mommy head warning!
Now as to what we are dealing with? Sounds like she is trying to lay her first egg. And NO, they don't usually do this, as the first eggs are usually smaller than average, thus allowing them to pass them without a problem. BUT, just like some subchicken level humans that have those 10-11lbs first babies....some chickens will lay a huge first time egg that is difficult to lay.
My other concern would be the amount of poop she seems to be having, that does NOT look like normal poop. Has she been wormed lately? Have you seen ANYTHING moving in the poop? Which brings up the possibility of the bleeding coming from a huge poop. We just don't know, and are really going through a trial elimination. Hey, at least I haven't billed ya for $100/hr like a doc or mechanic would!
Milk is OK. In fact. that mash with yogurt and her feed would probably be rather tasty to her. Getting necessary vitamins as well as fluids in her. Mine love spoiled milk the best.
Ugh, I've got a headache, and can't keep my train of thought this morning....forgot what else I was going to type.
Ok, monitor for intake, and output, as ya doing, and keep reporting it to Amy, cause she needs to know these things.