try backing off the protien a little and see if the poops solidify more., can administer something for an intestinal bug. apple cider vinegar in the water. 2tblsp to a gallon, try to get the knotts, has the pulp in it still, best stuff IMHO.
also try the yogurt, i just tried greek plain with my recovering wounded girl and 2 bantam blues i have, they seemed to enjoy it, atleadt what little of it they ate, i think vanilla is a better option personally. more appetizing to them, or do plain greek and mix in strawberries chopped to about 5mm square cubes, leave the seeds and skin.
also try some squash, you can suppliment in broccoli and spinach as well as rodichio lettuce and remove current feed and see if conditions change any.
i was recently chasing the runs and after they started getting fresh greens the poop solidified right up, they may also just be drinking far too much water which can cause the runs as well.
are you giving tap water? are you on city water or a well?
city water can contain high amounts of salt depending on the treatment process to balance PH (basically indistrial baking soda) which isnt really good for your girls. if on well water realize that E-coli can breed in wells, when was the last time if on well water it was bleached out?
NEVER BLEACH A WELL IF RUST IS PRESENT, can tell by taking a magnet and placing it under a glass of tap water for 24 hours, you will see sediment that react to the iron in the morning.
bleaching is easy to do. mix a gallon of bleach in 5 gallons of water, pour down well access and let sit for 24 hours. then run a exterior hose the furthest from the well head till the bleach smell goes away, during this period of time DO NOT DRINK OR USE WATER. it may be beneficial to shut off the water heater to prevent damage to the coils from the bleach being heated. during this period use potted water or buy several culligans from your local walmart at the refill center (those refill centers use a reverse osmosis filtration system and is actually cleaner then distilled water is) and see if conditions change any.
another contributing factor if on city water can be the use of flouride, its not good for us or our birds in the quantitys some states introduce to our water supplys and this may also be a cause.
heres a link for you to call and check to see what process they use to filter drinking water if you are on city water. this may lead you to a cause to this madness, i hope this helps you
https://www.google.com/search?q=sou...tment&ie=utf-8&oe=utf-8&client=firefox-b-1-ab