I went on a nature walk with a very good guide, he knew hundreds of birdspecies, knew where to find snakes and scorpions, gave a good explanation about termites, ...
You can book this nature walk of 1,5 hour at Roberts' Camp for Ksh 250.
The best way to explore the rich wildlife of Lake Baringo is to take a boat trip.
You'll see hippos, fish eagles, lots and lots of birds (450 species!) and even crocs.
An one-hour trip will cost you Ksh 2400/boat (7 persons), you can book at Roberts' Camp.