Hi,
I own a Dove that is nearly 20 years old. He hasn't eaten in a week, he looks fatigued, his feathers are ruffled up, he's been choking/coughing, and his droppings look watery and sticky. I've attempted hand-feeding him, but he refuses to accept the food; I've also treated him with Ornacycline, but it doesn't seem to work. Does he have Canker and what can I do to treat it?