Someone recently compared me to a bird. I’ve kept a few as pets over the years, so I understood the metaphor. Birds in captivity are problematic when sick. They don’t like to show illness. It’s a survival instinct to avoid looking yummy to predators. Even if tame, even if they adore you, the instinct is so strong. Unless you know what to look for, a bird might not show any sign of ailment until they are quite far along. Sometimes you won’t know a bird is sick until it falls over in its cage.