The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
(first | last) View (previous 50 | next 50) (20 | 50 | 100 | 250 | 500)- Turnagra (2 members)
- Turnicidae (2 members)
- Turnix (16 members)
- Turtur (5 members)
- Tylas (1 member)
- Tympanuchus (3 members)
- Tyranneutes (2 members)
- Tyranni Incertae Sedis (2 members)
- Tyrannidae (104 members)
- Tyrannopsis (1 member)
- Tyrannulus (1 member)
- Tyrannus (13 members)
- Tyto (15 members)
- Tytonidae (2 members)
- U.S. Virgin Islands (0 members)
- Uganda (2 members)
- Ukraine (2 members)
- United Arab Emirates (0 members)
- United Kingdom (7 members)
- United States (50 members)
- Upucerthia (6 members)
- Upupa (2 members)
- Upupidae (1 member)
- Uraeginthus (3 members)
- Uragus (0 members)
- Uratelornis (1 member)
- Uria (2 members)
- Urochroa (2 members)
- Urocissa (5 members)
- Urocolius (2 members)
- Urocynchramidae (1 member)
- Urocynchramus (1 member)
- Urodynamis (1 member)
- Uroglaux (1 member)
- Urolais (1 member)
- Urolestes (1 member)
- Uromyias (2 members)
- Uropelia (1 member)
- Uropsalis (2 members)
- Uropsila (1 member)
- Urorhipis (1 member)
- Urosphena (5 members)
- Urosticte (2 members)
- Urothraupis (1 member)
- Urotriorchis (1 member)
- Uruguay (0 members)
- Utah (3 members)
- Uzbekistan (0 members)
- Vanellus (24 members)
- Vanga (1 member)


