Small size allows these tiny birds to squeeze out of the smallest hole. Not very fast, so easy to catch. Our Sugar is super sweet, my son's favorite bird of the entire flock. Lays one egg about every other day. Would love to add a bunch more to her little flock. Integrates well into other flocks. Small but stout-hearted and hardy, not afraid of other big birds. Somewhat independent. Great pet bird for a gentle child. Fantastic color!