In this video clip, there is a pelican which was born through artificial incubation on May 2011 and was raised by a human for three months before being returned to the flock.
It was raised by humans so it doesn’t fear people compared to other pelicans. Sometimes marching forward along paths; which were made for spectators while proudly swinging its beak.
Because of this behavior, zoo officials banned that pelican from coming out through the path. Because there is a possibility that it can hurt tourists. That is why we don’t see it anymore.
But I can still see it from the video.
People were freaked out because of the pelican's dignified walk so they were busy to avoid it.
One day, I caught the scene when Bora was trying to escape from the fence.
It seems like Bora was trying to lean a broken tree against the wall so she can climb through the tree over the fence.
According to Frans B.M. de waal, who are studying and have written a few books about chimps, other chimps also appeared using a broken tree to go over the fence.
For that reason, we can understand orangutan has a great ability on how to use a tool and adapt a situation.
As well as they can learn from an experience by growing up.