صقر

(تم التحويل من Falcon)
For other uses, see صقر (توضيح) and صقور (توضيح).

صقر
Temporal range: الميوسين المتأخر إلى الحاضر
Brown-Falcon,-Vic,-3.1.2008.jpg
Brown falcon (Falco berigora) in ڤيكتوريا، أستراليا
التصنيف العلمي e
أصنوفة غير معروفة (أصلحها): Falco
Type species
Falco subbuteo[1]
Linnaeus, 1758
Species

38; see text.

Synonyms

الصقر ( Falcon ؛ /ˈfɒlkən,_ˈfɔːlʔ,_ˈfælʔ/) هو جنس Falco من فصيلة الطيور الجارحة، ويضم ذلك الجنس نحو 40 نوعاً. Falcons are widely distributed on all continents of the world except Antarctica, though closely related raptors did occur there في الإيوسين.[2]

Adult falcons have thin, tapered wings, which enable them to fly at high speed and change direction rapidly. Fledgling falcons, in their first year of flying, have longer flight feathers, which make their configuration more like that of a general-purpose bird such as a broad wing. This makes flying easier while learning the exceptional skills required to be effective hunters as adults.

The falcons are the largest genus in the Falconinae subfamily of Falconidae, which itself also includes another subfamily comprising caracaras and a few other species. All these birds kill with their beaks, using a tomial "tooth" on the side of their beaks—unlike the hawks, eagles, and other birds of prey in the Accipitridae, which use their feet.

The largest falcon is the gyrfalcon at up to 65 cm in length. The smallest falcon species is the pygmy falcon, which measures just 20 cm. As with hawks and owls, falcons exhibit sexual dimorphism, with the females typically larger than the males, thus allowing a wider range of prey species.[3]

Some small falcons with long, narrow wings are called "hobbies"[4] and some which hover while hunting are called "kestrels".[4][5]

As is the case with many birds of prey, falcons have exceptional powers of vision; the visual acuity of one species has been measured at 2.6 times that of a normal human.[6] Peregrine falcons have been recorded diving at speeds of 320 km/h (200 mph), making them the fastest-moving creatures on Earth; the fastest recorded dive attained a vertical speed of 390 km/h (240 mph).[7]

لأن طعامـه يعتمـد على اللحـوم ، يفقس بيض الصقر في أواخر الصيف وتقوم أنثي الصقر باصطياد فرائسهـا من الـطيور الـمهاجرة في ذلك الـوقـت لاطعام أفراخهـا الصغيرة، اذا فقـست بيضـة من بيض الصقر وكان فرخـها ضعيف تتركه أمه بدون طعام أوتقوم باطعامه للأفراخ الأخرىالفوية الصقور ذات أنواع عديدة من أهمها الصقر الحر والذي يشتهر بأنواعه (الحجازي والجرودي والقطامي) والشاهين والعوسق (الذي يتواجد في منطقة جبل حمرين في العراق) والجير والمغربي والفارسي والشامي والبخاري والوكري.

الصقر صياد ماهر جبل على صيد فرائسه ليقتات عليها الأمر الذي دفع الكثيرين للاستفادة من هذه الميزة لتدريبه للاستعانة فيه على الصيد.

وفي بعض الدول يربى الصقر على انه حيوان اليف يعتمد عليه في جلب القوت من أرانب وبعض الطيور.

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التبويب

التصنيف Falco قدمه في 1758 عالم الطبيعيات كارل لينايوس in the tenth edition of his Systema Naturae.[8] The type species is the Merlin (Falco columbarius).[9] The genus name Falco is Late Latin meaning a "falcon" from falx, falcis, meaning "a sickle", referring to the claws of the bird.[10][11] In Middle English and Old French, the title faucon refers generically to several captive raptor species.[12]

The traditional term for a male falcon is tercel (British spelling) or tiercel (American spelling), from the Latin tertius (third) because of the belief that only one in three eggs hatched a male bird. Some sources give the etymology as deriving from the fact that a male falcon is about one-third smaller than a female[13][14][15] (فرنسية قديمة: tiercelet). A falcon chick, especially one reared for falconry, still in its downy stage, is known as an eyas[16][17] (sometimes spelled eyass). The word arose by mistaken division of Old French un niais, from Latin presumed nidiscus (nestling) from nidus (nest). The technique of hunting with trained captive birds of prey is known as falconry.

Compared to other birds of prey, the fossil record of the falcons is not well distributed in time. The oldest fossils tentatively assigned to this genus are from the Late Miocene, less than 10 million years ago.[بحاجة لمصدر] This coincides with a period in which many modern genera of birds became recognizable in the fossil record. The falcon lineage may, however, be somewhat older than this,[بحاجة لمصدر] and given the distribution of fossil and living Falco taxa, is probably of North American, African, or possibly Middle Eastern or European origin. Falcons are not closely related to other birds of prey, and their nearest relatives are parrots and songbirds.[18]


استعراض

Falcons are roughly divisible into three or four groups. The first contains the kestrels (probably excepting the American kestrel);[12] usually small and stocky falcons of mainly brown upperside colour and sometimes sexually dimorphic; three African species that are generally gray in colour stand apart from the typical members of this group. The fox and greater kestrels can be told apart at first glance by their tail colours, but not by much else; they might be very close relatives and are probably much closer to each other than the lesser and common kestrels. Kestrels feed chiefly on terrestrial vertebrates and invertebrates of appropriate size, such as rodents, reptiles, or insects.

The second group contains slightly larger (on average) species, the hobbies and relatives. These birds are characterized by considerable amounts of dark slate-gray in their plumage; their malar areas are nearly always black. They feed mainly on smaller birds.

Third are the peregrine falcon and its relatives, variably sized powerful birds that also have a black malar area (except some very light color morphs), and often a black cap, as well. They are very fast birds with a maximum speed of 390 kilometres per hour. Otherwise, they are somewhat intermediate between the other groups, being chiefly medium grey with some lighter or brownish colours on their upper sides. They are, on average, more delicately patterned than the hobbies and, if the hierofalcons are excluded (see below), this group typically contains species with horizontal barring on their undersides. As opposed to the other groups, where tail colour varies much in general but little according to evolutionary relatedness,[note 1] the tails of the large falcons are quite uniformly dark grey with inconspicuous black banding and small, white tips, though this is probably plesiomorphic. These large Falco species feed on mid-sized birds and terrestrial vertebrates.

Very similar to these, and sometimes included therein, are the four or so species of hierofalcons (literally, "hawk-falcons"). They represent taxa with, usually, more phaeomelanins, which impart reddish or brown colors, and generally more strongly patterned plumage reminiscent of hawks. Their undersides have a lengthwise pattern of blotches, lines, or arrowhead marks.

While these three or four groups, loosely circumscribed, are an informal arrangement, they probably contain several distinct clades in their entirety.

A study of mtDNA cytochrome b sequence data of some kestrels[12] identified a clade containing the common kestrel and related "malar-striped" species, to the exclusion of such taxa as the greater kestrel (which lacks a malar stripe), the lesser kestrel (which is very similar to the common, but also has no malar stripe), and the American kestrel, which has a malar stripe, but its colour pattern – apart from the brownish back – and also the black feathers behind the ear, which never occur in the true kestrels, are more reminiscent of some hobbies. The malar-striped kestrels apparently split from their relatives in the Gelasian, roughly 2.0–2.5 million years ago (Mya), and are seemingly of tropical East African origin. The entire "true kestrel" group—excluding the American species—is probably a distinct and quite young clade, as also suggested by their numerous apomorphies.

Most members of the genus Falco show a "tooth" on the upper mandible

Other studies[19][20][21][22][23] have confirmed that the hierofalcons are a monophyletic group–and that hybridization is quite frequent at least in the larger falcon species. Initial studies of mtDNA cytochrome b sequence data suggested that the hierofalcons are basal among living falcons.[19][20] The discovery of a NUMT proved this earlier theory erroneous.[21] In reality, the hierofalcons are a rather young group, originating at the same time as the start of the main kestrel radiation, about 2 Mya. Very little fossil history exists for this lineage. However, the present diversity of very recent origin suggests that this lineage may have nearly gone extinct in the recent past.[23][24]

The phylogeny and delimitations of the peregrine and hobby groups are more problematic. Molecular studies have only been conducted on a few species, and the morphologically ambiguous taxa have often been little researched. The morphology of the syrinx, which contributes well to resolving the overall phylogeny of the Falconidae,[25][26] is not very informative in the present genus. Nonetheless, a core group containing the peregrine and Barbary falcons, which, in turn, group with the hierofalcons and the more distant prairie falcon (which was sometimes placed with the hierofalcons, though it is entirely distinct biogeographically), as well as at least most of the "typical" hobbies, are confirmed to be monophyletic as suspected.[19][20]

Given that the American Falco species of today belong to the peregrine group, or are apparently more basal species, the initially most successful evolutionary radiation seemingly was a Holarctic one that originated possibly around central Eurasia or in (northern) Africa. One or several lineages were present in North America by the Early Pliocene at latest.

The origin of today's major Falco groups—the "typical" hobbies and kestrels, for example, or the peregrine-hierofalcon complex, or the aplomado falcon lineage—can be quite confidently placed from the Miocene-Pliocene boundary through the Zanclean and Piacenzian and just into the Gelasian, that is from 2.4 to 5.3 Mya, when the malar-striped kestrels diversified. Some groups of falcons, such as the hierofalcon complex and the peregrine-Barbary superspecies, have only evolved in more recent times; the species of the former seem to be 120,000 years old or so.[23]

الأنواع

The sequence follows the taxonomic order of White et al. (1996),[27] except for adjustments in the kestrel sequence.

Image Common name Scientific name Distribution
Madagascar Kestrel RWD.jpg Malagasy kestrel Falco newtoni Madagascar, Mayotte, and the Comores.
Falco araea Seychelles Kestrel side views (cropped).jpg Seychelles kestrel Falco araeus Seychelles Islands
Falco punctatus.jpg Mauritius kestrel Falco punctatus Mauritius
Spotted kestrel flying (16862666012).jpg Spotted kestrel Falco moluccensis Wallacea and Java.
Nankeen Kestrel - Bimbi.jpg Nankeen kestrel or Australian kestrel Falco cenchroides Australia and New Guinea.
Common kestrel falco tinnunculus.jpg Common kestrel Falco tinnunculus Widespread in Europe, Asia, and Africa, as well as occasionally reaching the east coast of North America.
Rock Kestrel (Falco rupicolus), Mountain Zebra NP, South Africa.jpg Rock kestrel Falco rupicolus Northwestern Angola and southern Democratic Republic of Congo to southern Tanzania, and south to South Africa.
Hi There (41472582).jpeg Greater kestrel Falco rupicoloides Namibia, Botswana, Zimbabwe, parts of Angola and Zambia and in much of South Africa.
Falco alcopex.jpg Fox kestrel Falco alopex South of the Sahara from Mali eastwards as far as Ethiopia and north-west Kenya. It occasionally wanders west to Senegal, the Gambia and Guinea and south to the Democratic Republic of the Congo.
Falco naumanni, Israel 02.jpg Lesser kestrel Falco naumanni Mediterranean across Central Asia into China and Mongolia.
Grey Kestrel (Falco ardosiaceus) (6861327565).jpg Grey kestrel Falco ardosiaceus Ethiopia, western parts of Kenya and Tanzania.
Dickinson's Kestrel (Falco dickinsoni) (23164736424).jpg Dickinson's kestrel Falco dickinsoni Mozambique, Zimbabwe, Zambia and Malawi along with north-eastern South Africa.
Cerchneis zoniventris.jpg Banded kestrel Falco zoniventris Madagascar
Red-Necked Falcon.JPG Red-necked falcon Falco chicquera Africa, India
Red-footed Falcon.jpg Red-footed falcon Falco vespertinus Russia, Ukraine and bordering regions.
Amur falcon, Falco amurensis, male at Eendracht Road, Suikerbosrand, Gauteng, South Africa (25817217862).jpg Amur falcon Falco amurensis South-eastern Siberia and Northern China.
Eleonorenfalke1.jpg Eleonora's falcon Falco eleonorae Greece, Cyprus, the Canary Islands, Ibiza and off Spain, Italy, Croatia, Morocco and Algeria.
Sooty Falcon, Allée des Baobabs near Morondava, Madagascar.jpg Sooty falcon Falco concolor Northeastern Africa to the southern Persian Gulf region.
AmericanKestrel02.jpg American kestrel or "sparrow hawk" Falco sparverius Central and western Alaska across northern Canada to Nova Scotia, and south throughout North America, into central Mexico and the Caribbean.
Falcão De Coleira Aplomado Falcon Falco Femoralis (45602460).jpeg Aplomado falcon Falco femoralis Northern Mexico and Trinidad locally to southern South America.
Falco columbarius PP.jpg Merlin or "pigeon hawk" Falco columbarius Eurasia, North Africa, North America.
OFalco rufigularis Bat Falcon (cropped).jpg Bat falcon Falco rufigularis Tropical Mexico, Central and South America, and Trinidad
Falco deiroleucus - Orange-breasted Falcon.JPG Orange-breasted falcon Falco deiroleucus Southern Mexico to northern Argentina.
Hobby - Falco subbuteo.jpg Eurasian hobby Falco subbuteo Africa, Europe and Asia.
African Hobby bwindi jan06 (cropped).jpg African hobby Falco cuvierii Angola, Benin, Botswana, Burkina Faso, Burundi, Cameroon, Central African Republic, Chad, Republic of the Congo, Democratic Republic of the Congo, Ivory Coast, Eswatini, Ethiopia, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Kenya, Liberia, Malawi, Mali, Mozambique, Namibia, Niger, Nigeria, Rwanda, Senegal, Sierra Leone, Somalia, South Africa, Sudan, Tanzania, Togo, Uganda, Zambia, and Zimbabwe.
Oriental Hobby - Falco severus - Falco (2526569907).jpg Oriental hobby Falco severus Eastern Himalayas and ranges southwards through Indochina to Australasia
Australian Hobby Pikedale Jul02.JPG Australian hobby or little falcon Falco longipennis Australia
Nz falcon.JPG New Zealand falcon or kārearea Falco novaeseelandiae New Zealand
Brown falcon.jpg Brown falcon Falco berigora Australia and New Guinea.
Grey Falcon (1) - Christopher Watson (cropped).jpg Grey falcon Falco hypoleucos Australia
Falco subniger.jpg Black falcon Falco subniger Australia
Falco biarmicus02.png Lanner falcon Falco biarmicus Africa, southeast Europe and just into Asia.
Laggar Falcon adult male.jpg Laggar falcon Falco jugger Southeastern Iran, southeastern Afghanistan, Pakistan, through India, Nepal, Bhutan, Bangladesh and northwestern Myanmar.
Сокол балобан на обучении (Falco cherrug).jpg Saker falcon Falco cherrug Eastern Europe, the Middle East, Central Asia and China.
Gyr falcon - Falco rusticolus - Fálki 2.jpg Gyrfalcon Falco rusticolus Eastern and western Greenland, Canada, Alaska, Iceland and Norway.
Falco mexicanus -San Luis Obispo, California, USA-8.jpg Prairie falcon Falco mexicanus Western North America.
Falco peregrinus m Humber Bay Park Toronto.jpg Peregrine falcon Falco peregrinus Cosmopolitan
Taita Falcon at the World Center for Birds of Prey, Boise, Idaho, USA.jpg Taita falcon Falco fasciinucha Kenya


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الأنواع المنقرضة

السجل الأحفوري

Several more paleosubspecies of extant species also been described; see species accounts for these.

"Sushkinia" pliocaena from the Early Pliocene of Pavlodar (Kazakhstan) appears to be a falcon of some sort. It might belong in this genus or a closely related one.[28] In any case, the genus name Sushkinia is invalid for this animal because it had already been allocated to a prehistoric dragonfly relative. In 2015 the bird genus was renamed Psushkinia.[37]

The supposed "Falco" pisanus was actually a pigeon of the genus Columba, possibly the same as Columba omnisanctorum, which, in that case, would adopt the older species name of the "falcon".[29] The Eocene fossil "Falco" falconellus (or "F." falconella) from Wyoming is a bird of uncertain affiliations, maybe a falconid, maybe not; it certainly does not belong in this genus. "Falco" readei is now considered a paleosubspecies of the yellow-headed caracara (Milvago chimachima).

انظر أيضاً

الهامش

  1. ^ For example, tail colour in the common and lesser kestrels is absolutely identical, yet they do not seem closely related.
  2. ^ IZAN 45-4033: left carpometacarpus. Small species; possibly closer to kestrels than to peregrine lineage or hierofalcons, but may be more basal altogether due to its age
  3. ^ A hierofalcon (Mlíkovský 2002)? If so, probably not close to the living species, but an earlier divergence that left no descendants; might be more than one species due to large range in time and/or include common ancestor of hierofalcons and peregrine-Barbary complex (Nittinger et al. 2005).
  4. ^ Supposedly a saker falcon paleosubspecies (Mlíkovský 2002), but this is not too likely due to the probable Eemian origin of that species.

المراجع

  1. ^ "Falconidae". aviansystematics.org. The Trust for Avian Systematics. Retrieved 2023-07-25.
  2. ^ Cenizo, Marcos; Noriega, Jorge I.; Reguero, Marcelo A. (2016). "A stem falconid bird from the Lower Eocene of Antarctica and the early southern radiation of the falcons". Journal of Ornithology. 157 (3): 885. doi:10.1007/s10336-015-1316-0. S2CID 15517037.
  3. ^ Krüger, Oliver (2005). "The Evolution of Reversed Sexual Dimorphism in Hawks, Falcons and Owls: a comparative study". Evolutionary Ecology. 19 (5): 467–486. doi:10.1007/s10682-005-0293-9. S2CID 22181702.
  4. ^ أ ب Oberprieler, Ulrich; Cillié, Burger (2009). The raptor guide of Southern Africa (in الإنجليزية). Game Parks Publishing. ISBN 9780620432238.
  5. ^ Sale, Richard (28 July 2016). Falcons (Collins New Naturalist Library, Book 132) (in الإنجليزية). HarperCollins UK. ISBN 9780007511433.
  6. ^ Fox, R; Lehmkuhle, S.; Westendorf, D. (1976). "Falcon visual acuity". Science. 192 (4236): 263–65. Bibcode:1976Sci...192..263F. doi:10.1126/science.1257767. PMID 1257767.
  7. ^ "The Speed of Animals" in The New Book of Knowledge. Grolier Academic Reference. 2003. p. 278. ISBN 071720538X
  8. ^ Linnaeus, Carl (1758). Systema Naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis (in Latin). Vol. 1 (10th ed.). Holmiae (Stockholm): Laurentii Salvii. p. 88.{{cite book}}: CS1 maint: unrecognized language (link)
  9. ^ Dickinson, E.C.; Remsen, J.V. Jr., eds. (2013). The Howard & Moore Complete Checklist of the Birds of the World. Vol. 1: Non-passerines (4th ed.). Eastbourne, UK: Aves Press. p. 349. ISBN 978-0-9568611-0-8.
  10. ^ Jobling, James A. (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. p. 63. ISBN 978-1-4081-2501-4.
  11. ^ Shorter Oxford English dictionary on historical principles. Stevenson, Angus., Brown, Lesley. (6th. ed.). Oxford: Oxford University Press. 2007. ISBN 9780199206872. OCLC 170973920.{{cite book}}: CS1 maint: others (link)
  12. ^ أ ب ت Groombridge, Jim J.; Jones, Carl G.; Bayes, Michelle K.; van Zyl, Anthony J.; Carrillo, José; Nichols, Richard A.; Bruford, Michael W. (2002). "A molecular phylogeny of African kestrels with reference to divergence across the Indian Ocean". Molecular Phylogenetics and Evolution. 25 (2): 267–77. doi:10.1016/S1055-7903(02)00254-3. PMID 12414309.
  13. ^ قالب:OEtymD
  14. ^ "tercel". Dictionary.reference.com. Retrieved 20 March 2010.
  15. ^ "tercel", Oxford Dictionary
  16. ^ "eyas". Thefreedictionary.com. Retrieved 20 March 2010.
  17. ^ "Dictionary of Difficult Words – eyas". Tiscali.co.uk. 21 September 1964. Archived from the original on 5 January 2009. Retrieved 20 March 2010.
  18. ^ Suh A, Paus M, Kiefmann M, et al. (2011). "Mesozoic retroposons reveal parrots as the closest living relatives of passerine birds". Nature Communications. 2 (8): 443–8. Bibcode:2011NatCo...2..443S. doi:10.1038/ncomms1448. PMC 3265382. PMID 21863010.
  19. ^ أ ب ت Helbig, A.J.; Seibold, I.; Bednarek, W.; Brüning, H.; Gaucher, P.; Ristow, D.; Scharlau, W.; Schmidl, D. & Wink, Michael (1994): Phylogenetic relationships among falcon species (genus Falco) according to DNA sequence variation of the cytochrome b gene. In: Meyburg, B.-U. & Chancellor, R.D. (eds.): Raptor conservation today: pp. 593–99
  20. ^ أ ب ت Wink, Michael; Seibold, I.; Lotfikhah, F. & Bednarek, W. (1998): Molecular systematics of holarctic raptors (Order Falconiformes). In: Chancellor, R.D., Meyburg, B.-U. & Ferrero, J.J. (eds.): Holarctic Birds of Prey: 29–48. Adenex & WWGBP
  21. ^ أ ب Wink, Michael & Sauer-Gürth, Hedi (2000): Advances in the molecular systematics of African raptors. In: Chancellor, R.D. & Meyburg, B.-U. (eds): Raptors at Risk: 135–47. WWGBP/Hancock House, Berlin/Blaine.
  22. ^ Wink, Michael; Sauer-Gürth, Hedi; Ellis, David & Kenward, Robert (2004): Phylogenetic relationships in the Hierofalco complex (Saker-, Gyr-, Lanner-, Laggar Falcon). In: Chancellor, R.D. & Meyburg, B.-U. (eds.): Raptors Worldwide: 499–504. WWGBP, Berlin
  23. ^ أ ب ت ث Nittinger, F.; Haring, E.; Pinsker, W.; Wink, Michael; Gamauf, A. (2005). "Out of Africa? Phylogenetic relationships between Falco biarmicus and other hierofalcons (Aves Falconidae)" (PDF). Journal of Zoological Systematics and Evolutionary Research. 43 (4): 321–31. doi:10.1111/j.1439-0469.2005.00326.x.
  24. ^ Johnson, J.A.; Burnham, K.K.; Burnham, W.A.; Mindell, D.P. (2007). "Genetic structure among continental and island populations of gyrfalcons" (PDF). Molecular Ecology. 16 (15): 3145–60. doi:10.1111/j.1365-294X.2007.03373.x. hdl:2027.42/71471. PMID 17651193. S2CID 17437176.
  25. ^ Griffiths, Carole S. (1999). "Phylogeny of the Falconidae inferred from molecular and morphological data" (PDF). Auk. 116 (1): 116–30. doi:10.2307/4089459. JSTOR 4089459.
  26. ^ Griffiths, Carole S.; Barrowclough, George F.; Groth, Jeff G.; Mertz, Lisa (2004). "Phylogeny of the Falconidae (Aves): a comparison of the efficacy of morphological, mitochondrial, and nuclear data". Molecular Phylogenetics and Evolution. 32 (1): 101–09. doi:10.1016/j.ympev.2003.11.019. PMID 15186800.
  27. ^ White, Clayton M.; Olsen, Penny D. & Kiff, Lloyd F. (1994): Family Falconidae. In: del Hoyo, Josep; Elliott, Andrew & Sargatal, Jordi (editors): Handbook of Birds of the World, Volume 2 (New World Vultures to Guineafowl): 216–75, plates 24–28. Lynx Edicions, Barcelona. ISBN 84-87334-15-6
  28. ^ أ ب Becker, Jonathan J. (1987). "Revision of "Falco" ramenta Wetmore and the Neogene evolution of the Falconidae" (PDF). Auk. 104 (2): 270–76. doi:10.1093/auk/104.2.270. JSTOR 4087033.
  29. ^ أ ب Mlíkovský, Jirí (2002): Cenozoic Birds of the World, Part 1: Europe Archived 20 مايو 2011 at the Wayback Machine. Ninox Press, Prague
  30. ^ IMNH 27937. A coracoid of a merlin-sized species. It does not seem close to F. columbarius or the Recent North American species (Becker 1987).
  31. ^ Fox Canyon Local Fauna, 4.3–4.8 million years ago: Martin, R.A.; Honey, J.G. & Pelaez-Campomanes, P. (2000): The Meade Basin Rodent Project; a progress report. Kansas Geological Survey Open-file Report 2000-61. Paludicola 3(1): 1–32.
  32. ^ UMMP V27159, V29107, V57508-V57510, V57513/V57514[التحقق مطلوب] some limb bones. Slightly smaller than a merlin and more robust than American kestrel, and seems not too distant from F. columbarius. Feduccia, J. Alan; Ford, Norman L. (1970). "Some birds of prey from the Upper Pliocene of Kansas" (PDF). Auk. 87 (4): 795–97. doi:10.2307/4083714. JSTOR 4083714.
  33. ^ NNPM NAN 41-646. Almost complete left tarsometatarsus. Probably a prehistoric hobby, perhaps less specialized for bird hunting: Sobolev, D.V. (2003): Новый вид плиоценового сокола (Falconiformes, Falconidae) [A new species of Pliocene falcon (Falconiformes, Falconidae)] Vestnik zoologii 37 (6): 85–87. [Russian with English abstract]
  34. ^ Boev, Z. 1999. Falco bakalovi sp. n. – a Late Pliocene falcon (Falconidae, Aves) from Varshets (W Bulgaria). – Geologica Balcanica, 29 (1–2): 131–35.
  35. ^ Boev, Z. 2011. New fossil record of the Late Pliocene kestrel (Falco bakalovi Boev, 1999) from the type locality in Bulgaria. – Geologica Balcanica, 40 (1–3): 13–30.
  36. ^ Boev, Z. 2011. Falco bulgaricus sp. n. (Aves, Falconiformes) from the Middle Miocene of Hadzhidimovo (SW Bulgaria). – Acta zoologica bulgarica, 63 (1): 17–35.
  37. ^ Nikita V. Zelenkov; Evgeny N. Kurochkin (2015). "КЛАСС AVES". In E.N. Kurochkin; A.V. Lopatin; N.V. Zelenkov. Ископаемые позвоночные России и сопредельных стран. Ископаемые рептилии и птицы. Часть 3 / Fossil vertebrates of Russia and adjacent countries. Fossil Reptiles and Birds. Part 3. GEOS. pp. 86–290. ISBN 978-5-89118-699-6.

للاستزادة

  • Fuchs, J.; Johnson, J.A.; Mindell, D.P. (2015). "Rapid diversification of falcons (Aves: Falconidae) due to expansion of open habitats in the Late Miocene". Molecular Phylogenetics and Evolution. 82: 166–182. doi:10.1016/j.ympev.2014.08.010. PMID 25256056.

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