Hi, so for the past couple of months, I have had very alarming concerns with my ducks and need help badly. I have 5 ducks right now, but 2 died in the past couple of months from what was identified as cancer. One had tumors in his testes and liver, while another had one between his wing. I have a third one that's now showing symptoms of lethargy, and I'm unsure of what to do. I want to say its just because they're old, because this one is 11, but the ones that died as of recent were 8. I've debated on moving them out of their pen to get things situated, but I don't really know what the best solution is right now and I'm scared. Any help I would be grateful for.