Humans, gibbons and large birds walk by raising one foot at a time.
"A healthy wild bird just doesn't walk up to people like that."
There was a clucking sound, and a squat bird walked toward the wall.
One bird was walking very slowly, as if in pain.
People regularly use it for walking, bird watching and walking their dogs.
The observatory sponsors more than 1,000 bird walks a year.
While they are very fast in the water, on land the birds can only walk very slowly.
Meanwhile, the birds walked about the hooks, without taking any notice of them.
The supporting pull on the ropes ceased while the birds walked over him and into the cave.
Though its legs are short, the bird walks easily on the ground.