- Sand Martin
- Sanderling
- Sandwich Tern
- Sardinian Warbler
- Satin Bowerbird
- Scarlet Myzomela
- Sedge Warbler
- Short-eared Owl
- Short-toed Snake Eagle
- Short-toed Treecreeper
- Shy Albatross
- Silver Gull
- Slender-billed Gull
- Song Thrush
- Spotted Crake
- Spotted Dove
- Spotted Flycatcher
- Spotted Pardalote
- Spotted Redshank
- Squacco Heron
- Subalpine Warbler
- Sulphur-crested Cockatoo
- Superb Fairywren