She hates the grass, as well as being outside. As far as flock animal... she is pretty aggressive towards anything that moves. A neighbor's dog wanders up onto our porch occasionally, and she gets super protective and territorial. My daughter brought her dwarf lionhead bunny over and Dandy was super jealous of her. She is also rarely home alone. If she is, it's usually at night when she would normally be in her kennel asleep anyway. We take her with us to the park and lot's of places. We're trying to get her used to being around people more. I've had Indian runners inside for over 20 years, and they live long healthy lives. As for happiness, how do you tell if she's happy. It's not like a duck does a ton of smiling. She plays with toys and we play and run around together all the time. She seems content. No signs of depression or anything. I figure, it's like any bird that lives alone inside with an owner. She's just taller than a parakeet.