The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
(first | last) View (previous 250 | next 250) (20 | 50 | 100 | 250 | 500)- Silvicultrix (4 members)
- Simoxenops (0 members)
- Singapore (2 members)
- Sinosuthora (6 members)
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- Sipia (4 members)
- Sipodotus (1 member)
- Siptornis (1 member)
- Siptornopsis (0 members)
- Sirystes (4 members)
- Sitta (28 members)
- Sittasomus (1 member)
- Sittidae (1 member)
- Sittiparus (5 members)
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- Slr Accessories (8 members)
- Slr Cameras, Digital & Film (17 members)
- Slr Cameras, Digital and Film (1 member)
- Slr Lenses (30 members)
- Smicrornis (1 member)
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- Somateria (3 members)
- Somerset (7 members)
- South (22 members)
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- Southern Switzerland (4 members)
- Spain (41 members)
- Spartonoica (1 member)
- Spatula (10 members)
- Speculanas (1 member)
- Speculipastor (1 member)
- Speirops (0 members)
- Spelaeornis (9 members)
- Speotyto (0 members)
- Spermagra (0 members)
- Spermestes (4 members)
- Spermophaga (3 members)
- Sphecotheres (3 members)
- Spheniscidae (6 members)
- Sphenisciformes (1 member)
- Spheniscus (4 members)
- Sphenocichla (0 members)
- Sphenoeacus (1 member)
- Sphenopsis (1 member)
- Sphyrapicus (5 members)
- Spilopelia (2 members)
- Spiloptila (1 member)
- Spilornis (6 members)
- Spindalidae (1 member)
- Spindalis (4 members)
- Spinus (20 members)
- Spiranthes (1 member)
- Spiza (1 member)
- Spizaetus (12 members)
- Spizastur (1 member)
- Spizella (6 members)
- Spizelloides (1 member)
- Spiziapteryx (1 member)
- Spizixos (2 members)
- Spizocorys (7 members)
- Spodiopsar (2 members)
- Sporaeginthus (0 members)
- Sporathraupis (1 member)
- Sporophila (41 members)
- Sporopipes (2 members)
- Spreo (0 members)
- Sri Lanka (7 members)
- Stachyridopsis (0 members)
- Stachyris (13 members)
- Stactocichla (2 members)
- Stactolaema (4 members)
- Staffordshire (11 members)
- Stagonopleura (3 members)
- Staphida (3 members)
- Starnoenas (1 member)
- Steatornis (1 member)
- Steatornithidae (1 member)
- Stelgidillas (1 member)
- Stelgidopteryx (2 members)
- Stellula (0 members)
- Stenostira (1 member)
- Stenostiridae (4 members)
- Stephanoaetus (1 member)
- Stephanophorus (1 member)
- Stephanoxis (2 members)
- Stercorariidae (2 members)
- Stercorarius (7 members)
- Sterna (13 members)
- Sternidae (0 members)
- Sternoclyta (1 member)
- Sternula (7 members)
- Sterrhoptilus (3 members)
- Stictonetta (1 member)
- Stigmatura (3 members)
- Stilpnia (14 members)
- Stiltia (1 member)
- Stiphrornis (1 member)
- Stipiturus (3 members)
- Stizoptera (1 member)
- Stizorhina (2 members)
- Stomiopera (2 members)
- Strepera (3 members)
- Streptocitta (2 members)
- Streptopelia (15 members)
- Streptoprocne (5 members)
- Stresemannia (1 member)
- Strigidae (30 members)
- Strigiformes (2 members)
- Strigopidae (2 members)
- Strigops (1 member)
- Strix (21 members)
- Strophocincla (0 members)
- Struthidea (1 member)
- Struthio (4 members)
- Struthionidae (1 member)
- Struthioniformes (1 member)
- Stubs (51 members)
- Sturnella (3 members)
- Sturnia (5 members)
- Sturnidae (40 members)
- Sturnornis (1 member)
- Sturnus (2 members)
- Stymphalornis (0 members)
- Sublegatus (3 members)
- Sudan (0 members)
- Suffolk (6 members)
- Sugomel (1 member)
- Suiriri (1 member)
- Sula (6 members)
- Sulidae (3 members)
- Suliformes (4 members)
- Suriname (0 members)
- Surnia (1 member)
- Surniculus (4 members)
- Surrey (5 members)
- Sussex (16 members)
- Suthora (3 members)
- Swaziland (0 members)
- Sweden (39 members)
- Swiss Alps (7 members)
- Swiss Jura (1 member)
- Switzerland (27 members)
- Swynnertonia (1 member)
- Sylvia (8 members)
- Sylvietta (9 members)
- Sylviidae (6 members)
- Sylviorthorhynchus (2 members)
- Sylviparus (1 member)
- Syma (2 members)
- Symposiachrus (19 members)
- Synallaxis (36 members)
- Syndactyla (8 members)
- Synoicus (4 members)
- Synorhacma (1 member)
- Synthliboramphus (5 members)
- Sypheotides (1 member)
- Syria (0 members)
- Syrigma (1 member)
- Syrmaticus (5 members)
- Syrrhaptes (2 members)
- Syrtidicola (1 member)
- Systellura (2 members)
- Taccocua (1 member)
- Tachornis (3 members)
- Tachuris (1 member)
- Tachybaptus (5 members)
- Tachycineta (9 members)
- Tachyeres (4 members)
- Tachymarptis (2 members)
- Tachyphonus (5 members)
- Tadorna (6 members)
- Taenioglaux (0 members)
- Taenioptynx (1 member)
- Taeniopygia (2 members)
- Taeniotriccus (1 member)
- Taiwan (6 members)
- Tajikistan (0 members)
- Talaphorus (1 member)
- Talegalla (3 members)
- Talicada (1 member)
- Tangara (27 members)
- Tanygnathus (4 members)
- Tanysiptera (9 members)
- Tanzania (4 members)
- Taoniscus (1 member)
- Tapera (1 member)
- Taphrolesbia (1 member)
- Taphrospilus (1 member)
- Taraba (1 member)
- Tarphonomus (2 members)
- Tarsiger (6 members)
- Tasmania (2 members)
- Tauraco (11 members)
- Taxonomy (41 members)
- Tchagra (4 members)
- Telacanthura (2 members)
- Teledromas (1 member)
- Telespiza (2 members)
- Telophorus (3 members)
- Temenuchus (1 member)
- Temnurus (1 member)
- Templates (4 members)
- Tennessee (1 member)
- Tephrodornis (4 members)
- Tephrophilus (1 member)
- Tephrozosterops (1 member)
- Terathopius (1 member)
- Terenotriccus (1 member)
- Terenura (2 members)
- Teretistridae (1 member)
- Teretistris (2 members)
- Terpsiphone (15 members)
- Territornis (3 members)
- Tersina (1 member)
- Tersinidae (0 members)
- Tesia (4 members)
- Tetrao (4 members)
- Tetraogallus (5 members)
- Tetraonidae (0 members)
- Tetraophasis (2 members)
- Tetrastes (2 members)
- Tetrax (1 member)
- Texas (38 members)
- Thailand (4 members)
- Thalassarche (8 members)
- Thalasseus (7 members)
- Thalassoica (1 member)
- Thalassornis (1 member)
- Thalurania (4 members)
- Thamnistes (2 members)
- Thamnolaea (2 members)
- Thamnomanes (4 members)
- Thamnophilidae (55 members)
- Thamnophilus (30 members)
- Thamnornis (1 member)