In the Okavango Delta, the birding begins right outside your tent door- after all, as a world-famous bird watching destination; this is one of the main reasons why so many people come here. With over 500 recorded species in a wide range of habitats and with a variety of ways to see them, a birding trip to the Delta seldom disappoints.
For really keen birders a summer, rainy season visit is a must. The Delta's resident species are joined by intra African and Palae arcticmigrant’s and cuckoos. From the water, either in a mokoro or motorboat, expect to see cormorants, kingfishers, warblers, cisticolas, coucals and rails in the waterside vegetation. Drift quietly under the overhanging branches of riverine trees to look for Pel's fishing owl and rufousbellied heron. The open floodplains are the places to spot the slaty egret, waders, storks and cranes; sandbars might throw up roosting wildfowl and a flock of African skimmers.
http://www.botswanatourism.co.bw/activity/okavango-bird-watching