- Megascops alagoensis Dantas, Weckstein, Bates, Oliveira, Catanach et Aleixo, 2021 – syczoń atlantycki – Alagoas Screech Owl
Dantas, S.M., Weckstein, J.D.; Bates, J.; Oliveira, J.N.; Catanach, T.A. i Aleixo, A.. 2021. Multi-character taxonomic review, systematics, and biogeography of the Black-capped/Tawny-bellied Screech Owl (Megascops atricapilla-M. watsonii) complex (Aves: Strigidae). Zootaxa 4949(3): 401-444.
- Megascops stangiae Dantas, Weckstein, Bates, Oliveira, Catanach et Aleixo, 2021 – syczoń ciemny – Xingu Screech Owl
Dantas, S.M., Weckstein, J.D.; Bates, J.; Oliveira, J.N.; Catanach, T.A. i Aleixo, A.. 2021. Multi-character taxonomic review, systematics, and biogeography of the Black-capped/Tawny-bellied Screech Owl (Megascops atricapilla-M. watsonii) complex (Aves: Strigidae). Zootaxa 4949(3): 401-444.
- Trogon muriciensis Dickens, Bitton, Bravo et Silveira, w druku – trogon atlantycki – Alagoas Black-throated Trogon (Trogonidae – trogony)
Dickens, J.K.; Bitton, P.-P.; Bravo, G.A. i Silveira. L.F. 2021. Species limits, patterns of secondary contact and a new species in the Trogon rufus complex (Aves: Trogonidae). Zoological Journal of the Linnean Society zlaa169 (w druku).
- Cisticola bakerorum – Fjeldså, Dinesen, Davies, Irestedt, Krabbe, Hansen et Bowie, 2021 – Kilombero Cisticola (Passeriformes, Cisticolidae)
Fjeldså, J.; Dinesen, L. ; Davies, O.R.; Irestedt, M.; Krabbe, N.K.; Hansen, L.A. i Bowie, R.C.K. 2021. Description of two new Cisticola species endemic to the marshes of the Kilombero floodplain of southwestern Tanzania. Ibis (w druku).
- Cisticola anderseni - Fjeldså, Dinesen, Davies, Irestedt, Krabbe, Hansen et Bowie, 2021 – White-tailed Cisticola (Passeriformes, Cisticolidae)
Fjeldså, J.; Dinesen, L. ; Davies, O.R.; Irestedt, M.; Krabbe, N.K.; Hansen, L.A. i Bowie, R.C.K. 2021. Description of two new Cisticola species endemic to the marshes of the Kilombero floodplain of southwestern Tanzania. Ibis (w druku).
Gatunki kopalne:
1. † Shri devi Turner, Montanari et Norell, 2021 (Deinonychosauria, Dromaeosauridae)
Turner, A.H.; Montanari, S i Norell, M.A. 2021. A new dromaeosaurid from the Late Cretaceous Khulsan locality of Mongolia. American Museum Novitates 2020 (3965): 1–48.
2. † Tamarro insperatus Turner, Montanari et Norell, 2021 (Deinonychoauria, Troodontidae)
Sellés, A.G.; Vila, B.; Brusatte, S.L.; Currie, P.J.; Galobart, À. A fast-growing basal troodontid (Dinosauria: Theropoda) from the latest Cretaceous of Europe. Scientific Reports 11 (1): 4855.
3. † Apteryx littoralis Tennyson et Tomotani, 2021 (Apterygiformes, Apterygidae)
Tennyson A.J. i Tomotani, B.M. 2021. A new fossil species of kiwi (Aves: Apterygidae) from the mid-Pleistocene of New Zealand”. Historical Biology: An International Journal of Paleobiology. Edycja online: 1–9.
4. † Bumbalavis anatoides Zelenkov, 2021 (Anseriformes, Presbyornithidae)
Zelenkov, N.V. 2021. A revision of the Palaeocene-Eocene Mongolian Presbyornithidae (Aves: Anseriformes). Paleontological Journal 55 (3).
5. † Palaeogeranos tourmenti Louchart et Duhamel, 2021 (Gruiformes, ?Gruidae)
Louchart, A i Duhamel, A. 2021. A new fossil from the early Oligocene of Provence (France) increases the diversity of early Gruoidea and adds constraint on the origin of cranes (Gruidae) and limpkin (Aramidae). Journal of Ornithology: w druku.
6. †Procellaria altirostris Tennyson et Tomotani (Procellariformes, Procellaridae)
Tennyson, A.J. i Tomotani, B.M. 2021. A new fossil species of Procellaria (Aves: Procellariiformes) from the Pliocene of New Zealand. Papéis Avulsos de Zoologia 61: e20216116.
7. † Eopelecanus aegyptiacus El Adli, Wilson Mantilla, Antar et Gingerich, 2021 (Pelecaniformes, Pelecanidae)
El Adli, J.J.; Wilson Mantilla, J.A.; Antar, M.S.M. i Gingerich, P.D. 2021. The earliest recorded fossil pelican, recovered from the late Eocene of Wadi Al-Hitan, Egypt. Journal of Vertebrate Paleontology (w druku).
8. † Bitumenpicus minimus Campbell et Bocheński, 2021 (Piciformes, Picidae)
Campbell, K.E. i Bocheński, Z.M. 2021. A review of the woodpeckers (Aves: Piciformes) from the asphalt deposits of Rancho La Brea, California, with the description of three new species. Palaeobiodiversity and Palaeoenvironments: w druku.
9. † Breacopus garretti Campbell et Bocheński, 2021 (Piciformes, Picidae)
Campbell, K.E. i Bocheński, Z.M. 2021. A review of the woodpeckers (Aves: Piciformes) from the asphalt deposits of Rancho La Brea, California, with the description of three new species. Palaeobiodiversity and Palaeoenvironments: w druku.
10.† Melanerpes shawi Campbell et Bocheński, 2021 (Piciformes, Picidae)
Campbell, K.E. i Bocheński, Z.M. 2021. A review of the woodpeckers (Aves: Piciformes) from the asphalt deposits of Rancho La Brea, California, with the description of three new species. Palaeobiodiversity and Palaeoenvironments: w druku.
11. † Ueekenkcoracias tambussiae Degrange, Pol, Puerta, et Wilf, 2021 (Coraciiformes, Coraciidae)
Degrange, F.J.; Pol, D.; Puerta, P. i Wilf, P. 2021. Unexpected larger distribution of paleogene stem-rollers (Aves, Coracii): new evidence from the Eocene of Patagonia, Argentina. Scientific Reports 11 (1): 1363.
12. † Tynskya waltonensis (?Psittaciformes, Messelasturidae)
Mayr. G. 2021. A partial skeleton of a new species of Tynskya Mayr, 2000 (Aves, Messelasturidae) from the London Clay highlights the osteological distinctness of a poorly known early Eocene „owl/parrot mosaic”. Paläontologische Zeitschrift: w druku.
13. † Parapsittacopes bergdahli Mayr, 2021 (?Psittaciformes lub ?Passeriformes, Psittacopedidae)
Mayr, G. 2021. A remarkably complete skeleton from the London Clay provides insights into the morphology and diversity of early Eocene zygodactyl near-passerine birds. Journal of Systematic Palaeontology 18 (22): 1891–1906.
14. † Crosnoornis nargizia Bocheński, Tomek, Bujoczek et Salwa, 2021 (Passeriformes, Tyranni)
Bocheński, Z.M.; Tomek, T.; Bujoczek, M. i Salwa, G. 2021. A new passeriform (Aves: Passeriformes) from the early Oligocene of Poland sheds light on the beginnings of Suboscines. Journal of Ornithology 162 (2): 593–604.