The avifauna reported are geese, egrets, North African ostriches, herons, pelicans, saddle-billed storks and ibis.

The fourth category of vegetation comprises Acacia seyal tree savanna growing in black clay soils which gets highly saturated during the rainy months; grasses in these conditions spread very slowly or may even dry up.

The last type of vegetation is reported in the Yaéré flood plains, an important area to maintain perennial grasses in the park.

[2] A particular feature in the central and western parts of the park was that substantial areas were of annual grasses and herbs, interspersed by Acacia seyal shrublands.

The endangered African bush elephant, which feeds in the Vachellia seyal shrublands, creates conflicts even with farmers located far away.

Other species noted are hartebeest, tsessebe, olive baboon, patas and vervet monkey, leopard, cheetah and nocturnal aardvark.

[17] There are 379 species of birds in the park including the contiguous Logone floodplain; among the birds that have been sighted are marbled duck, ferruginous duck, greater spotted eagle, scissor-tailed kite in grass lands, lesser kestrel, Nubian bustard (Neotis nuba), quail-plover, Arabian bustard Ardeotis arabs, Cattle Egret, hornbill, various species of storks, Abyssinian roller, and Ostrich.

[3] The grassland species of birds reported are: Ortyxelos meiffrenii, Ardeotis arabs, Struthio camelus population in very large number of Dendrocygna viduata and Balearica pavonina.

[3] The key list of birds reported by BirdLife International is: garganey (Anas querquedula), great white pelican (Pelecanus onocrotalus), fox kestrel (Falco alopex), pallid harrier (Circus macrourus), Savile's bustard (Eupodotis savilei), black crowned-crane (Balearica pavonina), African collared-dove (Streptopelia roseogrisea), Senegal parrot (Poicephalus senegalus), red-throated bee-eater (Merops bulocki), Sahelian woodpecker (Dendropicos elachus), piapiac (Ptilostomus afer), Sennar penduline-tit (Anthoscopus punctifrons), red-pate cisticola (Cisticola ruficeps), river prinia (Prinia fluviatilis), Senegal eremomela (Eremomela pusilla), purple glossy-starling (Lamprotornis purpureus), chestnut-bellied starling (Lamprotornis pulcher), black scrub-robin (Cercotrichas podobe), chestnut-crowned sparrow-weaver (Plocepasser superciliosus), Sudan golden sparrow (Passer luteus), bush petronia (Petronia dentata), black-rumped waxbill (Estrilda troglodytes), and waterbirds[3] Water supply to the depressions in the park has become a major issue for preservation of biodiversity.

Irrigation embankments have also been built along the Logone River, which resulted in poorer grasslands and total elimination of fisheries in some areas.

Under the Logone Project artificial waterholes were dug, providing water all through the year, but the carrying capacity of the floodplain has remained low.

A study carried out on the effect of elephants on the survival of acacia trees discovered that the impact is not serious, but needs be monitored in order to ensure that the vegetation in the park is well conserved.

[1] Waza, which was considered the best-managed protected area in Cameroon, now has established collaboration with the IUCN Waza-Logone project to improve the water availability conditions, specifically in Waza National Park (1,700 km2 (660 sq mi)) and the much smaller Kalamaloue National Park (48 km2 (19 sq mi)), as well as other areas adjoining them through the Waza-Logone Project.

With the construction of the Maga Dam, built for irrigated agriculture of rice, the water resource contribution to the flood plains underwent a drastic reduction.

To improve the sustainability of the flood plains of the two parks, IUCN embarked on a project titled "IUCN’s Waza-Logone Project" with specific objectives of improving fish production, enhance the quality of grazing lands on which the local population were dependent; and to also increase the surface water for subsistence and proliferation of vegetation and wildlife, including avifauna not only of resident birds but also birds that migrate from Europe during the winter season.

The project has envisaged controlled harvesting of a few natural products such as straw and gum arabic under field trials, though their extraction has continued even after the park was established.

"[1] Also in 2005 the Netherlands World Conservation Union Committee agreed to pay for an additional sixteen "eco-rangers" who would assist the regular ones.

[3] As the Waza National Park is the major beneficiary from the project, the statistics show that 370 species of resident and migratory birds are now found in the Waza-Logone area which covers eight specific habitat types, and the number of waterfowl had increased from 59,000 in 1993 to 87,000 in 1997.