I have 2 hens, Stella and Super Chick (she got her name after being attacked by a husky and surviving... Supe for short) . Both are approaching 4yrs old. Supe showed symptoms first: stopped laying (was one of my best layers, RIR) swollen tummy, poop stuck to butt. She is active, eating and drinking as far as I can tell. Walks wide legged bc of swollen belly. Stella has never been a great layer, slowed down with age and also stopped laying all together. Her comb is pale and droopy. She stands like a penguin, not eating or drinking much and has watery green poop. I've treated for mites (cleaned coop, dusted birds with d.e. sprayed with clove oil) a few times, though I see no signs of mites in any of my 11 birds. I suspect that Supe has EYP, and Stella may be egg bound. Treated Supe with antibiotics for 3 days, no difference in swollen belly. All birds have access to oyster shells, and have been adding vitamins and electrolytes to water. Trying to remain as organic as possible, but these two are my oldest feathered friends and don't want to lose them. Any suggestions? Advice?