Brown Pelican in Philadelphia Zoo

We saw this brown pelican in the Philadelphia Zoo on 22nd March 2008. There is nothing special about pelican and we have seen it many times in the wild or the zoo. From what we learned, this pelican is different. It was injured in the wild and rescued by wildlife rehabilitation centers. Because of its injuries, it was just unable to go back to wild. After we learned that, we really have mixed feeling on this pelican. We were happy to see them in the zoo. On the other hands, it was sad to see that they were not able to go back to their normal life. In their case, the zoo was like hospital to them.