Bwindi Impenetrable Forest is home to the largest population of mountain gorillas (over 300) which is almost half of the world’s population. There are also 346 species of birds and over 200 species of butterflies. This afromontane forest has a dense under storey of fern, vines and shrubs. Around 324 tree species have been recorded here; 10 of which occur nowhere else in Uganda.
Bwindi is also one of the world's premier bird watching destinations. It contains 90% of all Albertine rift endemics which are difficult or impossible to see in any other part of East Africa and seven IUCN red data listed species amongst the 346 species of birds. An experienced bird watcher can identify up to 100 species in a day.