| Araguaia Spinetail Synallaxis simoni | Passeriformes / Furnariidae | LC |
| Spix's Spinetail Synallaxis spixi | Passeriformes / Furnariidae | LC |
| Necklaced Spinetail Synallaxis stictothorax | Passeriformes / Furnariidae | LC |
| Silvery-throated Spinetail Synallaxis subpudica | Passeriformes / Furnariidae | LC |
| Blackish-headed Spinetail Synallaxis tithys | Passeriformes / Furnariidae | VU |
| Rufous Spinetail Synallaxis unirufa | Passeriformes / Furnariidae | LC |
| Russet-bellied Spinetail Synallaxis zimmeri | Passeriformes / Furnariidae | VU |
| Planalto Foliage-gleaner Syndactyla dimidiata | Passeriformes / Furnariidae | LC |
| Guttulate Foliage-gleaner Syndactyla guttulata | Passeriformes / Furnariidae | LC |
| Tepui Foliage-gleaner Syndactyla roraimae | Passeriformes / Furnariidae | LC |
| Rufous-necked Foliage-gleaner Syndactyla ruficollis | Passeriformes / Furnariidae | LC |
| Buff-browed Foliage-gleaner Syndactyla rufosuperciliata | Passeriformes / Furnariidae | LC |
| Bolivian Recurvebill Syndactyla striata | Passeriformes / Furnariidae | LC |
| Lineated Foliage-gleaner Syndactyla subalaris | Passeriformes / Furnariidae | LC |
| Peruvian Recurvebill Syndactyla ucayalae | Passeriformes / Furnariidae | LC |
| Blue Quail Synoicus adansonii | Galliformes / Phasianidae | LC |
| Snow Mountain Quail Synoicus monorthonyx | Galliformes / Phasianidae | LC |
| Brown Quail Synoicus ypsilophorus | Galliformes / Phasianidae | LC |
| Craveri's Murrelet Synthliboramphus craveri | Charadriiformes / Alcidae | VU |
| Guadalupe Murrelet Synthliboramphus hypoleucus | Charadriiformes / Alcidae | EN |
| Scripps's Murrelet Synthliboramphus scrippsi | Charadriiformes / Alcidae | VU |
| Lesser Florican Sypheotides indicus | Otidiformes / Otididae | CR |
| Whistling Heron Syrigma sibilatrix | Pelecaniformes / Ardeidae | LC |
| Copper Pheasant Syrmaticus soemmerringii | Galliformes / Phasianidae | NT |
| Little Ground Tyrant Syrtidicola fluviatilis | Passeriformes / Tyrannidae | LC |
| Band-winged Nightjar Systellura longirostris | Caprimulgiformes / Caprimulgidae | NE |
| Sirkeer Malkoha Taccocua leschenaultii | Cuculiformes / Cuculidae | LC |
| Pygmy Palm Swift Tachornis furcata | Apodiformes / Apodidae | LC |
| Antillean Palm Swift Tachornis phoenicobia | Apodiformes / Apodidae | LC |
| Fork-tailed Palm Swift Tachornis squamata | Apodiformes / Apodidae | LC |
| Many-colored Rush Tyrant Tachuris rubrigastra | Passeriformes / Tyrannidae | LC |
| Least Grebe Tachybaptus dominicus | Podicipediformes / Podicipedidae | LC |
| Australasian Grebe Tachybaptus novaehollandiae | Podicipediformes / Podicipedidae | LC |
| Madagascar Grebe Tachybaptus pelzelnii | Podicipediformes / Podicipedidae | EN |
| Alaotra Grebe Tachybaptus rufolavatus | Podicipediformes / Podicipedidae | EX |
| Mangrove Swallow Tachycineta albilinea | Passeriformes / Hirundinidae | LC |
| White-winged Swallow Tachycineta albiventer | Passeriformes / Hirundinidae | LC |
| Tree Swallow Tachycineta bicolor | Passeriformes / Hirundinidae | LC |
| Bahama Swallow Tachycineta cyaneoviridis | Passeriformes / Hirundinidae | EN |
| Golden Swallow Tachycineta euchrysea | Passeriformes / Hirundinidae | VU |
| Chilean Swallow Tachycineta leucopyga | Passeriformes / Hirundinidae | LC |
| White-rumped Swallow Tachycineta leucorrhoa | Passeriformes / Hirundinidae | LC |
| Tumbes Swallow Tachycineta stolzmanni | Passeriformes / Hirundinidae | LC |
| Violet-green Swallow Tachycineta thalassina | Passeriformes / Hirundinidae | LC |
| Falkland Steamer Duck Tachyeres brachypterus | Anseriformes / Anatidae | LC |
| Chubut Steamer Duck Tachyeres leucocephalus | Anseriformes / Anatidae | VU |
| Flying Steamer Duck Tachyeres patachonicus | Anseriformes / Anatidae | LC |
| Fuegian Steamer Duck Tachyeres pteneres | Anseriformes / Anatidae | LC |
| Mottled Swift Tachymarptis aequatorialis | Apodiformes / Apodidae | LC |
| Ruby-crowned Tanager Tachyphonus coronatus | Passeriformes / Thraupidae | LC |