Have four - all 14 mths - and saw egg white in nesting box once this week, though don't know from which hen. Yesterday aft the blk sexlink was listless and off to herself - when she got up and moved around, she had white 1/2 pinkey sized soft egg hanging from her vent. Another chicken broke it and it flowed egg white. She continued off alone and listless through in to the evening, but then ate heartily and roosted with the other girls. Seems okay today. Two weeks ago, I saw her listless and off to herself, but found a partially eaten wild mushroom and thought it was the issue. She was fine after several hours, that time. Thinking now it may have been a vent/egg issue then too. How do I know if is this a nutrition or infection (or ther medical) issues? Any advise welcome. Also anyone know of a chick vet in Portland OR?