Giant groundsels and lobelia are some of the eye-catching flora on Mt. Kenya and Mt. Elgon. In addition to the mountain scenery and flora, the mountain parks are homes for the big five (no lions in Mt. Elgon) and a host of other rare mountain species like Bongo, Giant Forest hog, melanistic cats and many mountain bird species.
The lake ecosystem national parks contain the greatest concentration of flamingo in the world (Lake Nakuru National Park) and the greatest crocodile colony in the world (Sibiloi National park). There are also myriads of other bird species in and around the lakes, schools of hippopotamus and hundreds of land mammals species on the shores of the lakes.