| Mountain Bluebird Sialia currucoides | Passeriformes / Turdidae | LC |
| Western Bluebird Sialia mexicana | Passeriformes / Turdidae | LC |
| Eastern Bluebird Sialia sialis | Passeriformes / Turdidae | LC |
| Greater Yellow Finch Sicalis auriventris | Passeriformes / Thraupidae | LC |
| Stripe-tailed Yellow Finch Sicalis citrina | Passeriformes / Thraupidae | LC |
| Orange-fronted Yellow Finch Sicalis columbiana | Passeriformes / Thraupidae | LC |
| Saffron Finch Sicalis flaveola | Passeriformes / Thraupidae | LC |
| Patagonian Yellow Finch Sicalis lebruni | Passeriformes / Thraupidae | LC |
| Puna Yellow Finch Sicalis lutea | Passeriformes / Thraupidae | LC |
| Citron-headed Yellow Finch Sicalis luteocephala | Passeriformes / Thraupidae | LC |
| Grassland Yellow Finch Sicalis luteola | Passeriformes / Thraupidae | LC |
| Monte Yellow Finch Sicalis mendozae | Passeriformes / Thraupidae | LC |
| Greenish Yellow Finch Sicalis olivascens | Passeriformes / Thraupidae | LC |
| Raimondi's Yellow Finch Sicalis raimondii | Passeriformes / Thraupidae | LC |
| Sulphur-throated Finch Sicalis taczanowskii | Passeriformes / Thraupidae | LC |
| Bright-rumped Yellow Finch Sicalis uropygialis | Passeriformes / Thraupidae | LC |
| Fiscal Flycatcher Sigelus silens | Passeriformes / Muscicapidae | LC |
| Yellow-bellied Chat-Tyrant Silvicultrix diadema | Passeriformes / Tyrannidae | LC |
| Crowned Chat-Tyrant Silvicultrix frontalis | Passeriformes / Tyrannidae | NE |
| Jelski's Chat-Tyrant Silvicultrix jelskii | Passeriformes / Tyrannidae | LC |
| Golden-browed Chat-Tyrant Silvicultrix pulchella | Passeriformes / Tyrannidae | LC |
| Kalinowski's Chat-Tyrant Silvicultrix spodionota | Passeriformes / Tyrannidae | NE |
| Jamaican Poorwill Siphonorhis americana | Caprimulgiformes / Caprimulgidae | CR (PE) |
| Least Poorwill Siphonorhis brewsteri | Caprimulgiformes / Caprimulgidae | NT |
| Stub-tailed Antbird Sipia berlepschi | Passeriformes / Thamnophilidae | LC |
| Dull-mantled Antbird Sipia laemosticta | Passeriformes / Thamnophilidae | LC |
| Esmeraldas Antbird Sipia nigricauda | Passeriformes / Thamnophilidae | LC |
| Magdalena Antbird Sipia palliata | Passeriformes / Thamnophilidae | NT |
| Wallace's Fairywren Sipodotus wallacii | Passeriformes / Maluridae | LC |
| Spectacled Prickletail Siptornis striaticollis | Passeriformes / Furnariidae | LC |
| White-rumped Sirystes Sirystes albocinereus | Passeriformes / Tyrannidae | LC |
| Choco Sirystes Sirystes albogriseus | Passeriformes / Tyrannidae | LC |
| Sibilant Sirystes Sirystes sibilator | Passeriformes / Tyrannidae | LC |
| Todd's Sirystes Sirystes subcanescens | Passeriformes / Tyrannidae | LC |
| Blue Nuthatch Sitta azurea | Passeriformes / Sittidae | LC |
| Red-breasted Nuthatch Sitta canadensis | Passeriformes / Sittidae | LC |
| White-breasted Nuthatch Sitta carolinensis | Passeriformes / Sittidae | LC |
| Kashmir Nuthatch Sitta cashmirensis | Passeriformes / Sittidae | LC |
| Indian Nuthatch Sitta castanea | Passeriformes / Sittidae | LC |
| Bahama Nuthatch Sitta insularis | Passeriformes / Sittidae | CR |
| Krüper's Nuthatch Sitta krueperi | Passeriformes / Sittidae | LC |
| Algerian Nuthatch Sitta ledanti | Passeriformes / Sittidae | EN |
| White-cheeked Nuthatch Sitta leucopsis | Passeriformes / Sittidae | LC |
| Western Rock Nuthatch Sitta neumayer | Passeriformes / Sittidae | LC |
| Sulphur-billed Nuthatch Sitta oenochlamys | Passeriformes / Sittidae | LC |
| Brown-headed Nuthatch Sitta pusilla | Passeriformes / Sittidae | LC |
| Pygmy Nuthatch Sitta pygmaea | Passeriformes / Sittidae | LC |
| Eastern Rock Nuthatch Sitta tephronota | Passeriformes / Sittidae | LC |
| White-browed Nuthatch Sitta victoriae | Passeriformes / Sittidae | EN |
| Corsican Nuthatch Sitta whiteheadi | Passeriformes / Sittidae | VU |