According to the IOC, there are 424 species of Tyrant Flycatchers & allies in the family Tyrannidae; they are: Planalto Tyrannulet Phyllomyias fasciatus
Yungas Tyrannulet Phyllomyias weedeni
Rough-legged Tyrannulet Phyllomyias burmeisteri
White-fronted Tyrannulet Phyllomyias zeledoni
Greenish Tyrannulet Phyllomyias virescens
Reiser's Tyrannulet Phyllomyias reiseri
Urich's Tyrannulet Phyllomyias urichi
Sclater's Tyrannulet Phyllomyias sclateri
Grey-capped Tyrannulet Phyllomyias griseocapilla
Sooty-headed Tyrannulet Phyllomyias griseiceps
Plumbeous-crowned Tyrannulet Phyllomyias plumbeiceps
Black-capped Tyrannulet Phyllomyias nigrocapillus
Ashy-headed Tyrannulet Phyllomyias cinereiceps
Tawny-rumped Tyrannulet Phyllomyias uropygialis
Yellow-crowned Tyrannulet Tyrannulus elatus
Forest Elaenia Myiopagis gaimardii
Grey Elaenia Myiopagis caniceps
Foothill Elaenia Myiopagis olallai
Pacific Elaenia Myiopagis subplacens
Yellow-crowned Elaenia Myiopagis flavivertex
Greenish Elaenia Myiopagis viridicata
Jamaican Elaenia Myiopagis cotta
Yellow-bellied Elaenia Elaenia flavogaster
Caribbean Elaenia Elaenia martinica
Large Elaenia Elaenia spectabilis
Noronha Elaenia Elaenia ridleyana
White-crested Elaenia Elaenia albiceps
Small-billed Elaenia Elaenia parvirostris
Olivaceous Elaenia Elaenia mesoleuca
Slaty Elaenia Elaenia strepera
Mottle-backed Elaenia Elaenia gigas
Brownish Elaenia Elaenia pelzelni
Plain-crested Elaenia Elaenia cristata
Lesser Elaenia Elaenia chiriquensis
Rufous-crowned Elaenia Elaenia ruficeps
Mountain Elaenia Elaenia frantzii
Highland Elaenia Elaenia obscura
Great Elaenia Elaenia dayi
Sierran Elaenia Elaenia pallatangae
Greater Antillean Elaenia Elaenia fallax
Yellow-bellied Tyrannulet Ornithion semiflavum
Brown-capped Tyrannulet Ornithion brunneicapillus
White-lored Tyrannulet Ornithion inerme
Northern Beardless Tyrannulet Camptostoma imberbe
Southern Beardless Tyrannulet Camptostoma obsoletum
Suiriri Flycatcher Suiriri suiriri
Chapada Flycatcher Suiriri islerorum
White-throated Tyrannulet Mecocerculus leucophrys
White-tailed Tyrannulet Mecocerculus poecilocercus
Buff-banded Tyrannulet Mecocerculus hellmayri
Rufous-winged Tyrannulet Mecocerculus calopterus
Sulphur-bellied Tyrannulet Mecocerculus minor
White-banded Tyrannulet Mecocerculus stictopterus Black-crested Tit-Tyrant Anairetes nigrocristatus
Pied-crested Tit-Tyrant Anairetes reguloides
Ash-breasted Tit-Tyrant Anairetes alpinus
Yellow-billed Tit-Tyrant Anairetes flavirostris
Tufted Tit-Tyrant Anairetes parulus
Juan Fernandez Tit-Tyrant Anairetes fernandezianus
Agile Tit-Tyrant Anairetes agilis
Unstreaked Tit-Tyrant Anairetes agraphia
Torrent Tyrannulet Serpophaga cinerea
River Tyrannulet Serpophaga hypoleuca
Sooty Tyrannulet Serpophaga nigricans
White-crested Tyrannulet Serpophaga subcristata
White-bellied Tyrannulet Serpophaga munda
Mouse-colored Tyrannulet Phaeomyias murina
Tumbesian Tyrannulet Phaeomyias tumbezana
Yellow Tyrannulet Capsiempis flaveola
Bearded Tachuri Polystictus pectoralis
Grey-backed Tachuri Polystictus superciliaris
Cocos Flycatcher Nesotriccus ridgwayi
Dinelli's Doradito Pseudocolopteryx dinelliana
Crested Doradito Pseudocolopteryx sclateri
Subtropical Doradito Pseudocolopteryx acutipennis
Warbling Doradito Pseudocolopteryx flaviventris
Bronze-olive Pygmy Tyrant Pseudotriccus pelzelni
Hazel-fronted Pygmy Tyrant Pseudotriccus simplex
Rufous-headed Pygmy Tyrant Pseudotriccus ruficeps
Ringed Antpipit Corythopis torquatus
Southern Antpipit Corythopis delalandi
Tawny-crowned Pygmy Tyrant Euscarthmus meloryphus
Rufous-sided Pygmy Tyrant Euscarthmus rufomarginatus
Grey-and-white Tyrannulet Pseudelaenia leucospodia
Lesser Wagtail-Tyrant Stigmatura napensis
Greater Wagtail-Tyrant Stigmatura budytoides
Paltry Tyrannulet Zimmerius vilissimus
Venezuelan Tyrannulet Zimmerius improbus
Bolivian Tyrannulet Zimmerius bolivianus
Red-billed Tyrannulet Zimmerius cinereicapilla
Mishana Tyrannulet Zimmerius villarejoi
Slender-footed Tyrannulet Zimmerius gracilipes
Guianan Tyrannulet Zimmerius acer
Golden-faced Tyrannulet Zimmerius chrysops
Choco Tyrannulet Zimmerius albigularis
Loja Tyrannulet Zimmerius flavidifrons
Peruvian Tyrannulet Zimmerius viridiflavus
Variegated Bristle Tyrant Pogonotriccus poecilotis
Chapman's Bristle Tyrant Pogonotriccus chapmani
Marble-faced Bristle Tyrant Pogonotriccus ophthalmicus
Spectacled Bristle Tyrant Pogonotriccus orbitalis
Venezuelan Bristle Tyrant Pogonotriccus venezuelanus
Antioquia Bristle Tyrant Pogonotriccus lanyoni
Southern Bristle Tyrant Pogonotriccus eximius
Mottle-cheeked Tyrannulet Phylloscartes ventralis
Alagoas Tyrannulet Phylloscartes ceciliae
Restinga Tyrannulet Phylloscartes kronei
Bahia Tyrannulet Phylloscartes beckeri
Panamanian Tyrannulet Phylloscartes flavovirens
Olive-green Tyrannulet Phylloscartes virescens
Ecuadorian Tyrannulet Phylloscartes gualaquizae
Black-fronted Tyrannulet Phylloscartes nigrifrons
Rufous-browed Tyrannulet Phylloscartes superciliaris
Rufous-lored Tyrannulet Phylloscartes flaviventris
Cinnamon-faced Tyrannulet Phylloscartes parkeri
Minas Gerais Tyrannulet Phylloscartes roquettei
Sao Paulo Tyrannulet Phylloscartes paulista
Oustalet's Tyrannulet Phylloscartes oustaleti
Serra do Mar Tyrannulet Phylloscartes difficilis
Bay-ringed Tyrannulet Phylloscartes sylviolus Streak-necked Flycatcher Mionectes striaticollis
Olive-striped Flycatcher Mionectes olivaceus
Ochre-bellied Flycatcher Mionectes oleagineus
McConnell's Flycatcher Mionectes macconnelli
Grey-hooded Flycatcher Mionectes rufiventris
Sepia-capped Flycatcher Leptopogon amaurocephalus
Slaty-capped Flycatcher Leptopogon superciliaris
Rufous-breasted Flycatcher Leptopogon rufipectus
Inca Flycatcher Leptopogon taczanowskii
Northern Scrub Flycatcher Sublegatus arenarum
Amazonian Scrub Flycatcher Sublegatus obscurior
Southern Scrub Flycatcher Sublegatus modestus
Slender-billed Inezia Inezia tenuirostris
Plain Inezia Inezia inornata
Amazonian Inezia Inezia subflava
Pale-tipped Inezia Inezia caudata
Flavescent Flycatcher Myiophobus flavicans
Orange-crested Flycatcher Myiophobus phoenicomitra
Unadorned Flycatcher Myiophobus inornatus
Roraiman Flycatcher Myiophobus roraimae
Handsome Flycatcher Myiophobus pulcher
Orange-banded Flycatcher Myiophobus lintoni
Ochraceous-breasted Flycatcher Myiophobus ochraceiventris
Olive-chested Flycatcher Myiophobus cryptoxanthus
Bran-colored Flycatcher Myiophobus fasciatus
Ornate Flycatcher Myiotriccus ornatus
Many-colored Rush Tyrant Tachuris rubrigastra
Sharp-tailed Grass Tyrant Culicivora caudacuta
Drab-breasted Bamboo Tyrant Hemitriccus diops
Brown-breasted Bamboo Tyrant Hemitriccus obsoletus
Flammulated Bamboo Tyrant Hemitriccus flammulatus
Snethlage's Tody-Tyrant Hemitriccus minor
Yungas Tody-Tyrant Hemitriccus spodiops
Boat-billed Tody-Tyrant Hemitriccus josephinae
White-eyed Tody-Tyrant Hemitriccus zosterops
White-bellied Tody-Tyrant Hemitriccus griseipectus
Zimmer's Tody-Tyrant Hemitriccus minimus
Eye-ringed Tody-Tyrant Hemitriccus orbitatus
Johannes's Tody-Tyrant Hemitriccus iohannis
Stripe-necked Tody-Tyrant Hemitriccus striaticollis
Hangnest Tody-Tyrant Hemitriccus nidipendulus
Pearly-vented Tody-Tyrant Hemitriccus margaritaceiventer
Pelzeln's Tody-Tyrant Hemitriccus inornatus
Black-throated Tody-Tyrant Hemitriccus granadensis
Buff-breasted Tody-Tyrant Hemitriccus mirandae
Cinnamon-breasted Tody-Tyrant Hemitriccus cinnamomeipectus
Kaempfer's Tody-Tyrant Hemitriccus kaempferi
Buff-throated Tody-Tyrant Hemitriccus rufigularis
Fork-tailed Tody-Tyrant Hemitriccus furcatus Eared Pygmy Tyrant Myiornis auricularis
White-bellied Pygmy Tyrant Myiornis albiventris
Black-capped Pygmy Tyrant Myiornis atricapillus
Short-tailed Pygmy Tyrant Myiornis ecaudatus
Northern Bentbill Oncostoma cinereigulare
Southern Bentbill Oncostoma olivaceum
Scale-crested Pygmy Tyrant Lophotriccus pileatus
Long-crested Pygmy Tyrant Lophotriccus eulophotes
Double-banded Pygmy Tyrant Lophotriccus vitiosus
Helmeted Pygmy Tyrant Lophotriccus galeatus
Pale-eyed Pygmy Tyrant Atalotriccus pilaris
Rufous-crowned Tody-Flycatcher Poecilotriccus ruficeps
Lulu's Tody-Flycatcher Poecilotriccus luluae
White-cheeked Tody-Flycatcher Poecilotriccus albifacies
Black-and-white Tody-Flycatcher Poecilotriccus capitalis
Buff-cheeked Tody-Flycatcher Poecilotriccus senex
Ruddy Tody-Flycatcher Poecilotriccus russatus
Ochre-faced Tody-Flycatcher Poecilotriccus plumbeiceps
Smoky-fronted Tody-Flycatcher Poecilotriccus fumifrons
Rusty-fronted Tody-Flycatcher Poecilotriccus latirostris
Slaty-headed Tody-Flycatcher Poecilotriccus sylvia
Golden-winged Tody-Flycatcher Poecilotriccus calopterus
Black-backed Tody-Flycatcher Poecilotriccus pulchellus
Black-chested Tyrant Taeniotriccus andrei
Spotted Tody-Flycatcher Todirostrum maculatum
Yellow-lored Tody-Flycatcher Todirostrum poliocephalum
Common Tody-Flycatcher Todirostrum cinereum
Maracaibo Tody-Flycatcher Todirostrum viridanum
Painted Tody-Flycatcher Todirostrum pictum
Yellow-browed Tody-Flycatcher Todirostrum chrysocrotaphum
Black-headed Tody-Flycatcher Todirostrum nigriceps
Brownish Twistwing Cnipodectes subbrunneus
Rufous Twistwing Cnipodectes superrufus
Eye-ringed Flatbill Rhynchocyclus brevirostris
Olivaceous Flatbill Rhynchocyclus olivaceus
Pacific Flatbill Rhynchocyclus pacificus
Fulvous-breasted Flatbill Rhynchocyclus fulvipectus
Yellow-olive Flatbill Tolmomyias sulphurescens
Orange-eyed Flatbill Tolmomyias traylori
Zimmer's Flatbill Tolmomyias assimilis
Yellow-margined Flatbill Tolmomyias flavotectus
Grey-crowned Flatbill Tolmomyias poliocephalus
Ochre-lored Flatbill Tolmomyias flaviventris
Olive-faced Flatbill Tolmomyias viridiceps
Cinnamon-crested Spadebill Platyrinchus saturatus
Stub-tailed Spadebill Platyrinchus cancrominus
White-throated Spadebill Platyrinchus mystaceus
Golden-crowned Spadebill Platyrinchus coronatus
Yellow-throated Spadebill Platyrinchus flavigularis
White-crested Spadebill Platyrinchus platyrhynchos
Russet-winged Spadebill Platyrinchus leucoryphus
Amazonian Royal Flycatcher Onychorhynchus coronatus
Northern Royal Flycatcher Onychorhynchus mexicanus
Pacific Royal Flycatcher Onychorhynchus occidentalis
Atlantic Royal Flycatcher Onychorhynchus swainsoni
Tawny-breasted Myiobius Myiobius villosus
Sulphur-rumped Myiobius Myiobius sulphureipygius
Whiskered Myiobius Myiobius barbatus
Black-tailed Myiobius Myiobius atricaudus
Ruddy-tailed Flycatcher Terenotriccus erythrurus
Cinnamon Neopipo Neopipo cinnamomea
Cinnamon Flycatcher Pyrrhomyias cinnamomeus
Cliff Flycatcher Hirundinea ferruginea Euler's Flycatcher Lathrotriccus euleri
Grey-breasted Flycatcher Lathrotriccus griseipectus
Tawny-chested Flycatcher Aphanotriccus capitalis
Black-billed Flycatcher Aphanotriccus audax
Fuscous Flycatcher Cnemotriccus fuscatus
Belted Flycatcher Xenotriccus callizonus
Pileated Flycatcher Xenotriccus mexicanus
Eastern Phoebe Sayornis phoebe
Black Phoebe Sayornis nigricans
Say's Phoebe Sayornis saya
Northern Tufted Flycatcher Mitrephanes phaeocercus
Olive Tufted Flycatcher Mitrephanes olivaceus
Olive-sided Flycatcher Contopus cooperi
Greater Pewee Contopus pertinax
Dark Pewee Contopus lugubris
Smoke-colored Pewee Contopus fumigatus
Ochraceous Pewee Contopus ochraceus
Western Wood Pewee Contopus sordidulus
Eastern Wood Pewee Contopus virens
Tropical Pewee Contopus cinereus
Tumbes Pewee Contopus punensis
White-throated Pewee Contopus albogularis
Blackish Pewee Contopus nigrescens
Cuban Pewee Contopus caribaeus
Hispaniolan Pewee Contopus hispaniolensis
Jamaican Pewee Contopus pallidus
Lesser Antillean Pewee Contopus latirostris
Yellow-bellied Flycatcher Empidonax flaviventris
Acadian Flycatcher Empidonax virescens
Willow Flycatcher Empidonax traillii
Alder Flycatcher Empidonax alnorum
White-throated Flycatcher Empidonax albigularis
Least Flycatcher Empidonax minimus
Hammond's Flycatcher Empidonax hammondii
American Dusky Flycatcher Empidonax oberholseri
American Grey Flycatcher Empidonax wrightii
Pine Flycatcher Empidonax affinis
Pacific-slope Flycatcher Empidonax difficilis
Cordilleran Flycatcher Empidonax occidentalis
Yellowish Flycatcher Empidonax flavescens
Buff-breasted Flycatcher Empidonax fulvifrons
Black-capped Flycatcher Empidonax atriceps
Vermilion Flycatcher Pyrocephalus rubinus
Patagonian Negrito Lessonia rufa
Andean Negrito Lessonia oreas
Cinereous Tyrant Knipolegus striaticeps
Hudson's Black Tyrant Knipolegus hudsoni
Amazonian Black Tyrant Knipolegus poecilocercus
Andean Tyrant Knipolegus signatus
Blue-billed Black Tyrant Knipolegus cyanirostris
Rufous-tailed Tyrant Knipolegus poecilurus
Riverside Tyrant Knipolegus orenocensis
White-winged Black Tyrant Knipolegus aterrimus
Caatinga Black Tyrant Knipolegus franciscanus
Crested Black Tyrant Knipolegus lophotes
Velvety Black Tyrant Knipolegus nigerrimus Spectacled Tyrant Hymenops perspicillatus
Drab Water Tyrant Ochthornis littoralis
Yellow-browed Tyrant Satrapa icterophrys
Little Ground Tyrant Muscisaxicola fluviatilis
Spot-billed Ground Tyrant Muscisaxicola maculirostris
Plain-capped Ground Tyrant Muscisaxicola griseus
Puna Ground Tyrant Muscisaxicola juninensis
Cinereous Ground Tyrant Muscisaxicola cinereus
White-fronted Ground Tyrant Muscisaxicola albifrons
Ochre-naped Ground Tyrant Muscisaxicola flavinucha
Rufous-naped Ground Tyrant Muscisaxicola rufivertex
Dark-faced Ground Tyrant Muscisaxicola maclovianus
White-browed Ground Tyrant Muscisaxicola albilora
Paramo Ground Tyrant Muscisaxicola alpinus
Cinnamon-bellied Ground Tyrant Muscisaxicola capistratus
Black-fronted Ground Tyrant Muscisaxicola frontalis
Black-billed Shrike-Tyrant Agriornis montanus
White-tailed Shrike-Tyrant Agriornis albicauda
Great Shrike-Tyrant Agriornis lividus
Grey-bellied Shrike-Tyrant Agriornis micropterus
Lesser Shrike-Tyrant Agriornis murinus
Fire-eyed Diucon Xolmis pyrope
Grey Monjita Xolmis cinereus
Black-crowned Monjita Xolmis coronatus
White-rumped Monjita Xolmis velatus
White Monjita Xolmis irupero
Rusty-backed Monjita Xolmis rubetra
Salinas Monjita Xolmis salinarum
Black-and-white Monjita Heteroxolmis dominicana
Streak-throated Bush Tyrant Myiotheretes striaticollis
Santa Marta Bush Tyrant Myiotheretes pernix
Smoky Bush Tyrant Myiotheretes fumigatus
Rufous-bellied Bush Tyrant Myiotheretes fuscorufus
Red-rumped Bush Tyrant Cnemarchus erythropygius
Rufous-webbed Bush Tyrant Polioxolmis rufipennis
Chocolate-vented Tyrant Neoxolmis rufiventris
Streamer-tailed Tyrant Gubernetes yetapa
Shear-tailed Grey Tyrant Muscipipra vetula
Pied Water Tyrant Fluvicola pica
Black-backed Water Tyrant Fluvicola albiventer
Masked Water Tyrant Fluvicola nengeta
White-headed Marsh Tyrant Arundinicola leucocephala
Cock-tailed Tyrant Alectrurus tricolor
Strange-tailed Tyrant Alectrurus risora
Tumbes Tyrant Tumbezia salvini
Crowned Chat-Tyrant Ochthoeca frontalis
Kalinowski's Chat-Tyrant Ochthoeca spodionota
Golden-browed Chat-Tyrant Ochthoeca pulchella
Yellow-bellied Chat-Tyrant Ochthoeca diadema
Jelski's Chat-Tyrant Ochthoeca jelskii
Slaty-backed Chat-Tyrant Ochthoeca cinnamomeiventris
Blackish Chat-Tyrant Ochthoeca nigrita
Maroon-belted Chat-Tyrant Ochthoeca thoracica
Rufous-breasted Chat-Tyrant Ochthoeca rufipectoralis
Brown-backed Chat-Tyrant Ochthoeca fumicolor
d'Orbigny's Chat-Tyrant Ochthoeca oenanthoides
White-browed Chat-Tyrant Ochthoeca leucophrys
Piura Chat-Tyrant Ochthoeca piurae Patagonian Tyrant Colorhamphus parvirostris
Long-tailed Tyrant Colonia colonus
Short-tailed Field Tyrant Muscigralla brevicauda
Cattle Tyrant Machetornis rixosa
Piratic Flycatcher Legatus leucophaius
White-bearded Flycatcher Phelpsia inornata
Rusty-margined Flycatcher Myiozetetes cayanensis
Social Flycatcher Myiozetetes similis
Grey-capped Flycatcher Myiozetetes granadensis
Dusky-chested Flycatcher Myiozetetes luteiventris
Great Kiskadee Pitangus sulphuratus
Lesser Kiskadee Philohydor lictor
White-ringed Flycatcher Conopias albovittatus
Yellow-throated Flycatcher Conopias parvus
Three-striped Flycatcher Conopias trivirgatus
Lemon-browed Flycatcher Conopias cinchoneti
Golden-bellied Flycatcher Myiodynastes hemichrysus
Golden-crowned Flycatcher Myiodynastes chrysocephalus
Baird's Flycatcher Myiodynastes bairdii
Sulphur-bellied Flycatcher Myiodynastes luteiventris
Streaked Flycatcher Myiodynastes maculatus
Boat-billed Flycatcher Megarynchus pitangua
Sulphury Flycatcher Tyrannopsis sulphurea
Variegated Flycatcher Empidonomus varius
Crowned Slaty Flycatcher Griseotyrannus aurantioatrocristatus
Snowy-throated Kingbird Tyrannus niveigularis
White-throated Kingbird Tyrannus albogularis
Tropical Kingbird Tyrannus melancholicus
Couch's Kingbird Tyrannus couchii
Cassin's Kingbird Tyrannus vociferans
Thick-billed Kingbird Tyrannus crassirostris
Western Kingbird Tyrannus verticalis
Scissor-tailed Flycatcher Tyrannus forficatus
Fork-tailed Flycatcher Tyrannus savana
Eastern Kingbird Tyrannus tyrannus
Grey Kingbird Tyrannus dominicensis
Giant Kingbird Tyrannus cubensis
Loggerhead Kingbird Tyrannus caudifasciatus
Greyish Mourner Rhytipterna simplex
Pale-bellied Mourner Rhytipterna immunda
Rufous Mourner Rhytipterna holerythra
Eastern Sirystes Sirystes sibilator
Western Sirystes Sirystes albogriseus
Rufous Casiornis Casiornis rufus
Ash-throated Casiornis Casiornis fuscus Rufous Flycatcher Myiarchus semirufus
Yucatan Flycatcher Myiarchus yucatanensis
Sad Flycatcher Myiarchus barbirostris
Dusky-capped Flycatcher Myiarchus tuberculifer
Swainson's Flycatcher Myiarchus swainsoni
Venezuelan Flycatcher Myiarchus venezuelensis
Panamanian Flycatcher Myiarchus panamensis
Short-crested Flycatcher Myiarchus ferox
Apical Flycatcher Myiarchus apicalis
Pale-edged Flycatcher Myiarchus cephalotes
Sooty-crowned Flycatcher Myiarchus phaeocephalus
Ash-throated Flycatcher Myiarchus cinerascens
Nutting's Flycatcher Myiarchus nuttingi
Great Crested Flycatcher Myiarchus crinitus
Brown-crested Flycatcher Myiarchus tyrannulus
Galapagos Flycatcher Myiarchus magnirostris
Grenada Flycatcher Myiarchus nugator
Rufous-tailed Flycatcher Myiarchus validus
La Sagra's Flycatcher Myiarchus sagrae
Stolid Flycatcher Myiarchus stolidus
Puerto Rican Flycatcher Myiarchus antillarum
Lesser Antillean Flycatcher Myiarchus oberi
Flammulated Flycatcher Deltarhynchus flammulatus
Bamboo Flatbill Ramphotrigon megacephalum
Rufous-tailed Flatbill Ramphotrigon ruficauda
Dusky-tailed Flatbill Ramphotrigon fuscicauda
Rufous-tailed Attila Attila phoenicurus
Cinnamon Attila Attila cinnamomeus
Ochraceous Attila Attila torridus
Citron-bellied Attila Attila citriniventris
White-eyed Attila Attila bolivianus
Grey-hooded Attila Attila rufus
Bright-rumped Attila Attila spadiceus
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