Species of bird
| Long-billed crow |
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| Preserved specimen from the Naturalis Biodiversity Center, Netherlands |
Conservation status |
 Near Threatened (IUCN 3.1)[1] |
Scientific classification  |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Passeriformes |
| Family: | Corvidae |
| Genus: | Corvus |
| Species: | C. validus |
| Binomial name |
Corvus validus
Bonaparte, 1850 |
The long-billed crow (Corvus validus) is a crow that is endemic to the Northern Maluku Islands. This crow is large with glossy plumage, a large bill and white irises. It is classified by the International Union for Conservation of Nature as a "near-threatened species".
Description
The long-billed crow is a large crow growing from 45 to 53 cm (18 to 21 in) in length including its relatively short tail. The large bill tapers from a broad base and is black, as are the legs and feet. The plumage is glossy and entirely black. The call of this crow has been likened to the yapping of a puppy "cruk ... cruk ... cruk".[2]
The long-billed crow can be differentiated from other crows by its large size and glossy plumage, its long beak and its white iris.[3] The only other crow within its range is the Torresian crow (Corvus orru) which has a much smaller beak and inhabits more open areas rather than forests.[4]
Distribution and habitat
The long-billed crow is endemic to the Maluku Islands, an archipelago within Indonesia. It is a forest-dwelling bird and is mainly found on the islands of Morotai, Obira, Kayoa, Kasiruta, Bacan and Halmahera.[1]
Status
The long-billed crow has a restricted range with a total area of occupancy of about 25,700 km2 (9,900 sq mi). The forests in which it lives are being degraded and the population of the crow is estimated to be declining. However, it is a common bird and seems able to adapt to a certain extent to secondary forests, partly logged areas, plantations and cultivated areas. The International Union for Conservation of Nature, for a long period of time, rated its conservation status as being of "least concern" but has now upgraded this to "near threatened" because populations seem to be declining more rapidly than was previously thought.[1]
References
- ^ a b c BirdLife International (2017). "Corvus validus". IUCN Red List of Threatened Species. 2017: e.T22705963A118785644. doi:10.2305/IUCN.UK.2017-3.RLTS.T22705963A118785644.en. Retrieved 12 November 2021.
- ^ Madge, S.; Sharpe, C.J. "Long-billed Crow (Corvus validus)". Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. Retrieved 19 July 2016.
- ^ Marzluff, John M.; Angell, Tony (2008). In the Company of Crows and Ravens. Yale University Press. p. 74. ISBN 978-0-300-13526-8.
- ^ Madge, Steve (2010). Crows and Jays. A&C Black. pp. 145–. ISBN 978-1-4081-3527-3.
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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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Taxon identifiers |
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| Corvus validus | |
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