They were fairly stubby, not as elongated as what you would find in a juvenile tyrannosaur and they had pneumatic openings visible.???Williams likened the animal to ???a parrot on steroids.??????Based on the length of its tibia and other bones we have, it???s probably going to be 5 to 6 feet tall at the hip,??? said Williams. ???You???re looking at an animal that is probably pretty fleet of foot,