Species of bird
| Tamaulipas crow |
 |
Conservation status |
 Least Concern (IUCN 3.1)[1] |
 Secure (NatureServe)[2] |
Scientific classification  |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Passeriformes |
| Family: | Corvidae |
| Genus: | Corvus |
| Species: | C. imparatus |
| Binomial name |
Corvus imparatus
Peters, 1929 |
 |
The Tamaulipas crow (Corvus imparatus) is a crow found in northeastern Mexico and southern Texas.
Description
It is a relatively small and sleek looking crow, 34–38 centimetres (13–15 in) in length. It has very glossy dark, bluish plumage, which appears soft and silky. The bill is quite slender and black, as are the legs and feet. The Chihuahuan raven, a much larger and very different bird, is the only crow it commonly occurs alongside.[3]
Taxonomy
The Sinaloa crow (Corvus sinaloae) appears to be genetically extremely close to this bird and can be considered the western form of it though the voice is quite different, indeed a third species, the fish crow (Corvus ossifragus) of the southeastern United States appears to be very closely related to them also and the three may be considered a superspecies.
Distribution and habitat
Occurring in a relatively small area in northeastern Mexico, it inhabits near desert scrub and bushland and includes farms, small towns and villages in its range. It also occurs in more humid woodland in open areas but does not appear to be found in the higher mountains or along the seashore. It is a sociable bird often forming large flocks, moving together in close groups. Its northern range reaches Brownsville in southern Texas where it has been known to nest.[4]
Behaviour
Diet
Food would appear to be mainly insects taken on the ground though eggs and nestlings are taken in trees as well as many fruits and berries.
Nesting
The nest is similar to the American crow but smaller and is built in a tree or large bush.
Voice
The voice of this crow is unusual and unlike most other species of the genus Corvus. It has a low croaking sound rather like a frog and a call that is described as a soft "gar-lik".
References
- ^ BirdLife International (2020). "Corvus imparatus". IUCN Red List of Threatened Species. 2020: e.T22705996A137723972. doi:10.2305/IUCN.UK.2020-3.RLTS.T22705996A137723972.en. Retrieved 12 November 2021.
- ^ "Corvus imparatus". NatureServe Explorer. Retrieved 18 July 2024.
- ^ Sibley, David Allen (2000). The Sibley Guide to Birds. New York: Alfred A. Knopf. p. 361. ISBN 978-0-679-45122-8.
- ^ Griggs, Jack L. (1997). American Bird Conservancy's Field Guide to All the Birds of North America. New York: HarperPerennial. ISBN 0-06-273028-2.
External links
Wikimedia Commons has media related to Corvus imparatus.
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| Choughs | | Pyrrhocorax | - Alpine chough (P. graculus)
- Red-billed chough (P. pyrrhocorax)
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| Treepies | | Crypsirina | - Hooded treepie (C. cucullata)
- Black racket-tailed treepie (C. temia)
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| Dendrocitta | - Andaman treepie (D. bayleyi)
- Bornean treepie (D. cinerascens)
- Grey treepie (D. formosae)
- Black-faced treepie (D. frontalis)
- White-bellied treepie (D. leucogastra)
- Sumatran treepie (D. occipitalis)
- Rufous treepie (D. vagabunda)
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| Platysmurus | - Malayan black magpie (P. leucopterus)
- Bornean black magpie (P. aterrimus)
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| Temnurus | - Ratchet-tailed treepie (T. temnurus)
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Oriental
magpies | | Cissa | - Common green magpie (C. chinensis)
- Indochinese green magpie (C. hypoleuca)
- Bornean green magpie (C. jefferyi)
- Javan green magpie (C. thalassina)
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| Urocissa | - Taiwan blue magpie (U. caerulea)
- Red-billed blue magpie (U. erythrorhyncha)
- Yellow-billed blue magpie (U. flavirostris)
- Sri Lanka blue magpie (U. ornata)
- White-winged magpie (U. whiteheadi)
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| Old World jays | | Garrulus | - Eurasian jay (G. glandarius)
- Lanceolated jay (G. lanceolatus)
- Lidth's jay (G. lidthi)
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Podoces
(Ground jays) | - Xinjiang ground jay (P. biddulphi)
- Mongolian ground jay (P. hendersoni)
- Turkestan ground jay (P. panderi)
- Iranian ground jay (P. pleskei)
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| Ptilostomus | |
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Stresemann's
bushcrow | | Zavattariornis | - Stresemann's bushcrow (Z. stresemanni)
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| Nutcrackers | | Nucifraga | - Spotted nutcracker (N. caryocatactes)
- Clark's nutcracker (N. columbiana)
- Kashmir nutcracker (N. multipunctata)
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Holarctic
magpies | | Pica | - Black-billed magpie (P. hudsonia)
- Yellow-billed magpie (P. nuttalli)
- Eurasian magpie (P. pica)
- Oriental magpie (P. sericea)
- Maghreb magpie (P. mauritanica)
- Asir magpie (P. asirensis)
- Black-rumped magpie (P. bottanensis)
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| True crows | | Corvus | - Australian and Melanesian species
- Little crow (C. bennetti)
- Australian raven (C. coronoides)
- Bismarck crow (C. insularis)
- Brown-headed crow (C. fuscicapillus)
- Bougainville crow (C. meeki)
- Little raven (C. mellori)
- New Caledonian crow (C. moneduloides)
- Torresian crow (C. orru)
- Forest raven (C. tasmanicus)
- Grey crow (C. tristis)
- Long-billed crow (C. validus)
- White-billed crow (C. woodfordi)
- Pacific island species
- Hawaiian crow (C. hawaiiensis)
- Mariana crow (C. kubaryi)
- Tropical Asian species
- Slender-billed crow (C. enca)
- Small crow (C. samarensis)
- Palawan crow (C. pusillus)
- Flores crow (C. florensis)
- Large-billed crow (C. macrorhynchos)
- Eastern jungle crow (C. levaillantii)
- Indian jungle crow (C. culminatus)
- House crow (C. splendens)
- Collared crow (C. torquatus)
- Piping crow (C. typicus)
- Banggai crow (C. unicolor)
- Violet crow (C. violaceus)
- Eurasian and North African species
- Mesopotamian crow (C. capellanus)
- Hooded crow (C. cornix)
- Carrion crow (C. corone)
- Rook (C. frugilegus)
- Eastern carrion crow (C. orientalis)
- Fan-tailed raven (C. rhipidurus)
- Brown-necked raven (C. ruficollis)
- Holarctic species
- Common raven (C. corax)
- North and Central American species
- American crow (C. brachyrhynchos)
- Chihuahuan raven (C. cryptoleucus)
- Tamaulipas crow (C. imparatus)
- Jamaican crow (C. jamaicensis)
- White-necked crow (C. leucognaphalus)
- Cuban palm crow (C. minutus)
- Cuban crow (C. nasicus)
- Fish crow (C. ossifragus)
- Hispaniolan palm crow (C. palmarum)
- Sinaloan crow (C. sinaloae)
- Tropical African species
- White-necked raven (C. albicollis)
- Pied crow (C. albus)
- Cape crow (C. capensis)
- Thick-billed raven (C. crassirostris)
- Somali crow (C. edithae)
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| Jackdaws | |
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Azure-winged
magpies | | Cyanopica | - Iberian magpie (C. cooki)
- Azure-winged magpie (C. cyanus)
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| Grey jays | | Perisoreus | - Canada jay (P. canadensis)
- Siberian jay (P. infaustus)
- Sichuan jay (P. internigrans)
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| New World jays | Aphelocoma
(Scrub jays) | - California scrub jay (A. californica)
- Island scrub jay (A. insularis)
- Woodhouse's scrub jay (A. woodhouseii)
- Florida scrub jay (A. coerulescens)
- Transvolcanic jay (A. ultramarina)
- Unicolored jay (A. unicolor)
- Mexican jay (A. wollweberi)
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Calocitta
(Magpie-Jays) | - Black-throated magpie-jay (C. colliei)
- White-throated Magpie-jay (C. formosa)
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| Cyanocitta | - Blue jay (C. cristata)
- Steller's jay (C. stelleri)
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| Cyanocorax | - Black-chested jay (C. affinis)
- Purplish-backed jay (C. beecheii)
- Azure jay (C. caeruleus)
- Cayenne jay (C. cayanus)
- Plush-crested jay (C. chrysops)
- Curl-crested jay (C. cristatellus)
- Purplish jay (C. cyanomelas)
- White-naped jay (C. cyanopogon)
- Tufted jay (C. dickeyi)
- Azure-naped jay (C. heilprini)
- Bushy-crested jay (C. melanocyaneus)
- Brown jay (C. morio)
- White-tailed jay (C. mystacalis)
- San Blas jay (C. sanblasianus)
- Violaceous jay (C. violaceus)
- Green jay (C. ynca)
- Yucatan jay (C. yucatanicus)
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| Cyanolyca | - Silvery-throated jay (C. argentigula)
- Black-collared jay (C. armillata)
- Azure-hooded jay (C. cucullata)
- White-throated jay (C. mirabilis)
- Dwarf jay (C. nana)
- Beautiful jay (C. pulchra)
- Black-throated jay (C. pumilo)
- Turquoise jay (C. turcosa)
- White-collared jay (C. viridicyana)
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| Gymnorhinus | - Pinyon jay (G. cyanocephalus)
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