The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Animals (36 members)
- Animals (Marine Mammals) (36 members)
- Bees and Wasps (33 members)
- Birds (Land and Estuaries) (123 members)
- Birds (Shore and Seabirds) (65 members)
- Botanical terms (4 members)
- Butterflies (28 members)