Hi.i have 9 chickens . one weak ago,one of them wasn't herself.she have sitting in nest box, but no eggs. I have think just like before, she doesn't any problems,because for long time she nesting but no eggs.her eggs were shell less and she didn't laying again,and her abdomen is swollen.but this time she was panting,and her comb was dark.and I touched her abdomen just under her vent, and I felt something hard.for few days I think it's tumor, gland or hernia or yolk mass.but two days ago I stuck my finger in her vent and there is a hard thing in her intestinal.i don't know what is it.intestinal tumor, gland, cancer, intestinal obstruction . is it possible that be Clostridium perfringens and necrotic intestinal?her poops are small and dark green,sometimes white chalky.her comb is dark yet but she's breathing better.i gave her baytril 10% for 4 days. she's sitting on one side. she's 2.5 years. her appetite is good and she's not very lethargic.just worry for that hard thing in her intestinal. othere girls are OK. we haven't vet here, help me please.