home to a wide variety of wildlife, including  hippopotamus , crocodile  (both in decline here), and large communities of migrating birds including wintering  ducks ,  Ruff (Philomachus pugnax)  and other  waterfowl , and shore  birds . There are two near-endemic birds  River Prinia (Prinia fluviatilis)  and the  Rusty Lark   (Mirafra