Accipitriformes

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Accipitriformes
Temporal range:
Ma
[1]
Clockwise from top left: Bald eagle (Haliaeetus leucocephalus), cinereous harrier (Circus cinereus), greater spotted eagle (Clanga clanga), harpy eagle (Harpia harpyja), secretarybird (Sagittarius serpentarius), osprey (Pandion haliaetus), slate-colored hawk (Buteogallus schistaceus), Galapagos hawk (Buteo galapagoensis), white-backed vulture (Gyps africanus) (center)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Clade: Accipitrimorphae
Order: Accipitriformes
Vieillot, 1816
Families
Diversity map of Accipitriformes (258 species). The colour gradient (from light to dark) indicates species richness.[2]

The Accipitriformes (/ækˈsɪpɪtrɪfɔːrmiːz/; from Latin accipiter/accipitri- "hawk", and Neo-Latin -formes "having the form of") are an order of birds that includes most of the diurnal birds of prey, including hawks, eagles, vultures, and kites, but not falcons.

For a long time, the majority view was to include them with the falcons in the

New World vultures in the Accipitriformes,[7][11] while the SACC classifies the New World vultures as a separate order, the Cathartiformes
.

Characteristics

The Accipitriformes are known from the Middle

cere housing the nostrils. Their wings
are long and fairly broad, suitable for soaring flight, with the outer four to six primary feathers emarginated.

They have strong legs and feet with raptorial claws and opposable hind claws. Almost all Accipitriformes are carnivorous, hunting by sight during the day or at twilight. They are exceptionally long-lived, and most have low reproductive rates.[citation needed]

The young have a long, very fast-growing fledgling stage, followed by 3–8 weeks of nest care after first flight, and 1 to 3 years as sexually immature adults. The sexes have conspicuously different sizes and sometimes a female is more than twice as heavy as her mate. This sexual dimorphism is sometimes most extreme in specialized bird-eaters, such as the Accipiter hawks. Monogamy is the general rule, although an alternative mate is often selected if one dies.

Taxonomy

Accipitriformes, currently with 262 species and 75 genera in 4 extant families and possibly 1 extinct family, is the largest diurnal raptor order. DNA sequence analyses suggest that divergences within Accipitriformes began around the Eocene/Oligocene boundary about 34 mya, with the split of the group including genera Elanus and Gampsonyx from the other Accipitriformes genera.[17]

The order includes the following families: Order Accipitriformes

For a complete list of species, see list of Accipitriformes species.

Neoaves

Phylogeny based on Nagy, J. & Tökölyi, J. (2014).[18]

Footnotes

  1. ^ Mayr G, Smith T. A diverse bird assemblage from the Ypresian of Belgium furthers knowledge of early Eocene avifaunas of the North Sea Basin. N Jb Geol Paläontol, Abh. 2019;291:253–281. doi: 10.1127/njgpa/2019/0801.
  2. PMID 34554530
    .
  3. ^ Voous 1973.
  4. ^ Cramp 1980, pp. 3, 277.
  5. ^ Ferguson-Lees & Christie 2001, p. 69.
  6. ^ Christidis & Boles 2008, pp. 50–51.
  7. ^ a b Hackett et al. 2008.
  8. ^ Remsen et al.
  9. ^ Remsen 2008.
  10. ^ Nores, Barker & Remsen 2011.
  11. ^ a b Chesser et al. 2010.
  12. ^ Chesser et al. 2012.
  13. ^ Gill & Donsker.
  14. ^ Gill & Donsker 2014.
  15. ^ Dudley et al. 2006.
  16. ^ Sangster et al. 2013.
  17. S2CID 49622660
    .
  18. S2CID 46321534
    .

References

External links
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