Every hen is different. I can only generalize. I've had hens with reproductive issues that came out of the blue and never happened again. Others start having issues at a young age, and continue to have them.
Reproductive issues cover a lot of territory, as well. Not all are caused by poor shell quality or a stuck egg or a broken egg. Sometimes it can be a very small obscure bit of tissue that gets stuck. In other cases, bacteria somehow can enter the oviduct from the vent and work its way up, inflaming the oviduct tissue, and causing as much trouble as egg binding.
Sometimes a vet can X-ray the hen and get an idea of what might be going on, whether it's a stuck egg or a "mass". But when we're internet diagnosing, it's pure guess work based on our own experience. I can't tell you with certainty what's going on. I can only read the signs and work from there. I'd say I have a little better than a 50/50 chance of nailing it.
Reproductive issues cover a lot of territory, as well. Not all are caused by poor shell quality or a stuck egg or a broken egg. Sometimes it can be a very small obscure bit of tissue that gets stuck. In other cases, bacteria somehow can enter the oviduct from the vent and work its way up, inflaming the oviduct tissue, and causing as much trouble as egg binding.
Sometimes a vet can X-ray the hen and get an idea of what might be going on, whether it's a stuck egg or a "mass". But when we're internet diagnosing, it's pure guess work based on our own experience. I can't tell you with certainty what's going on. I can only read the signs and work from there. I'd say I have a little better than a 50/50 chance of nailing it.