Table 2. Geographic range descriptions for range size codes of endemic species, those with medium-sized ranges and widespread species, for birds, butterflies and plants, separately.
| Birds | Butterflies | Understorey Plants/Trees | |||||||
| Range | # spp. | Range | # spp. | Range | #/# spp. | ||||
| Endemic | 1 | Cameroon-Gabon lowlands restricted | 1 | 1 | endemic to eastern Nigeria and southwestern Cameroon | 2 | 1 | Endemic to SW Cameroon/SE Nigeria border | 14/24 |
| 2 | from Nigeria to the Cameroon-Gabon-Congo zone | 20 | 2 | From SW Cameroon/SE Nigeria border to W Benin/Togo border OR from SW Cameroon/SE Nigeria border to Gabon, Congo, Equatorial Guinea, including Fernando Po and Sao Tome and Principe islands. | 44/54 | ||||
| 3 | from Nigeria to D.R. Congo or DRC-Uganda border | 26 | 3 | From SW Cameroon/SE Nigeria, Gabon, Congo, Equatorial Guinea, including Fernando Po and Sao Tome and Principe islands to W Ivory Coast OR from SW Cameroon/SE Nigeria, Gabon, Congo, Equatorial Guinea to DRC/Uganda border and Angola | 22/33 | ||||
| 2 | Guineo-Congolian Forest Biome restricted | 115 | 4 | from Nigeria to east of Rift Valley | 9 | ||||
| Medium distributional range | 5 | from western West Africa to the Nigeria-Cameroon border | 6 | 4 | From Benin to DRC/Uganda border and Angola OR from SW Cameroon/SE Nigeria, Gabon, Congo, Equatorial Guinea to Sierra Leone OR from SW Cameroon/SE Nigeria, Gabon, Congo, Equatorial Guinea to Kenya and Angola | 26/25 | |||
| 6 | from western West Africa to the Cameroon-Gabon-Congo zone | 10 | 5 | From Sierra Leone to D.R. Congo/Uganda, and Angola OR from SW Cameroon/SE Nigeria, Gabon, Congo, Equatorial Guinea to Senegambia OR from SW Cameroon/SE Nigeria, Gabon, Congo, Equatorial Guinea to E Rift Valley, and Angola | 13/26 | ||||
| 6 | From Senegambia to D.R. Congo/Uganda, and Angola | 11/12 | |||||||
| Widespread | 3 | African Rainforest | 2 | 7 | from western West Africa to D.R. Congo or DRC-Uganda border | 14 | |||
| 8 | from western West Africa to Uganda or Western Kenya | 19 | 7 | From Senegambia to Tanzania and Angola OR From Ivory Coast to Sudan, East Africa/Mozambique | 5/3 | ||||
| 9 | from western West Africa to east of Rift Valley | 3 | 8 | From Senegambia to Sudan, East Africa/Mozambique, and Angola | 12/11 | ||||
| 4 | Ubiquitous in Africa | 62 | 10 | found throughout Africa in suitable habitats | 10 | 9 | Throughout tropical Africa in suitable habitats | 14/16 | |
Also given are numbers of species in each category.