I also chose other because there is more than one reason. Most of my birds live out a natural life. I cull if there is sickness or injury that is not survivable and the bird is suffering. I also cull extra roosters since I don't have an entire dedicated space to keep bachelors. I keep as many as I reasonably can without beating up the hens, but some have to go. They are chosen for keeping based mostly on temperament and personality, looks is way down on my list. The nasty ones always go first. I have kept some special needs birds, just depends on the quality of life and if they suffer or not.