Here are a few mystery birds that I saw in June 2010 in Botswana. Unfortunately, I don't know what kinds of birds they are, but if you happen to know, post a comment!

This brave bird was standing on the head of a hippopotamus, right in the middle of a pod of hungry hippos on the Chobe river, bordering Botswana and Namibia.
I think this is some kind of wood pecker.
A bunch of birds making a nest in the Chobe River in between Botswana/Namibia.

Another colorful bird.
A bird flies over our boat.

This appears to be another roller of some sort.
If anyone can help me (Larry) identify these mystery birds, write in the comment fields below. Thanks!!
Comments
I can confirm the Pied Kingfisher, and the Lilac-breasted Roller and the Egrets
You have some great photos there.
Best wishes...
Pondlife