Dancing Roo, Outback Station, Northern Territory, Australia.
Taken with Canon EOS550D. EFS 55-250mm Lens.
Kangaroos are often colloquially referred to as roos. Male kangaroos are called bucks, boomers, jacks, or old men; females are does, flyers, or jills, and the young ones are joeys. The collective noun for kangaroos is a mob, troop, or court. Mobs usually have ten or more kangaroos in them. Living in mobs provides protection for some of the weaker members of the group.