One of our girls is having problems this evening. I check them every day and didn't notice anything amiss yesterday, so I gather this is a new development. She's not very active and has clear, foamy, foul smelling discharge coming from her mouth, nostrils and eyes. I haven't observed her long enough to note any elimination or eating. Does this sound like sour crop and if so, what do I need to do to help her out? Will check back in a little while. Thanks in advance!