A Gray Heron having a ride on a Hippo. I have seen a variety of birds taking rides on hippos. It isn't really the transportation that the birds seek--they hope to catch some frogs, crabs, or small mollusks, and maybe some insects as the big fellows climb ashore. [Botswana].
A Gray Heron at water's edge. The black head-stripe taking off from behind the eye, and the top of the head being white, differentiates this species from the Blackheaded Heron. [Lake Karibe, Zimbabwe].
A Gray Heron fishing in the evening. Note that the black coloration is on the side of the head only, not the top, which differentiates it from the blackheaded Heron. [Botswana].