
	Where results make sense

Topic: Hooded crows

Related Topics

Carrion Crow

American Crow

Cape Crow

Rook (bird)

Northwestern Crow

Jackdaw

New Caledonian Crow

House Crow

Corvidae

Isabelline Wheatear

Spotted Flycatcher

Australian Raven

Common raven

Cyanocitta

European Magpie

	Airgun Sport & Conservation: Crows (Site not responding. Last check: 2007-11-06)
		The Hooded Crow is found in other territory including Scotland and Ireland, and is a resident bird, except during the winter months when large flocks come to Central and Western Europe.
		Crows nests are made mostly of dry twigs and also mud and turf, lined with grass, moss, sheep's wool, hair and rag.
		Crows are most often found at their feeding places, grouping areas and roosts later in the afternoon and as darkness falls.
	www.airguns.f9.co.uk /subs/quarry/crows1.htm (817 words)

	Hooded Crow - Wikipedia, the free encyclopedia
		The Hooded Crow Corvus cornix, (48-52 cm in length) is so similar in structure and habits to the Carrion Crow that some authorities consider them to be merely geographical races of one species, however since 2002 the bird has been elevated to full species status.
		In the UK, the Hooded Crow breeds regularly in Scotland, the Isle of Man, and in the Scottish Islands.
		On coastal cliffs the eggs of gulls, cormorants and other birds are stolen when their owners are absent, and it will enter the burrow of the Puffin with a similar object.
	en.wikipedia.org /wiki/Hooded_Crow (405 words)

	Articles - Crow (Site not responding. Last check: 2007-11-06)
		Crows are often referred to as "Arse Birds", due to their distinctive call, which sounds a bit like they are saying "Arse" in a funny voice.
		Crows, and especially ravens, often feature in legends or mythology as portents or harbingers of doom or death, because of their dark plumage, unnerving calls, and tendency to eat carrion.
		In mythology and folklore as a whole, crows tend to be symbolic more of the spiritual aspect of death, or the transition of the spirit into the afterlife, whereas ravens tend more often to be associated with the negative (physical) aspect of death.
	www.landize.com /articles/Crow (889 words)

	PAIR COMPOSITION AND REPRODUCTIVE SUCCESS ACROSS A HYBRID ZONE OF CARRION CROWS AND HOODED CROWS (Site not responding. Last check: 2007-11-06)
		The result of a lower reproductive success of the hybrid females with respect to Hooded Crow females in the hybrid zone and also to the parental females in the areas of allopatry was partly determined by hatching failures due to egg shell frailty in some hybrid female nests.
		The ob- servation that Carrion Crows were more suc- cessful in the area of allopatry than within the hybrid zone suggests that a negative selection gradient runs across the hybrid zone that is par- alleled by a steep environmental and altitudinal gradient from the alpine valleys to the inten- sively cultivated plain.
		The coincidence of the crow hybrid zone in northwestern Italy with an ecotone, and patterns of variation in reproductive success and of foraging-habitat selection, support the idea that the parental populations are adapted to dif- ferent environments, or that each of them is competitively superior to the other in its own range.
	elibrary.unm.edu /sora/Auk/v109n03/p0543-p0555.html (10921 words)

	Hooded crow - Corvus cornix: More Information - ARKive
		In Britain, this crow mainly occurs in north and western Scotland, it also occurs in Ireland and on the Isle of Man. Elsewhere it is widespread throughout central and northern Europe between the Arctic in the north to the Mediterranean in the south (5).
		Hooded crows are intelligent birds; in Finland they have been seen reeling in fishing lines left in holes in the ice to obtain fish (6).
		Hooded crows are perceived as a threat to livestock, as they are believed to kill and injure young lambs and trapped sheep (4).
	www.arkive.org /species/ARK/birds/Corvus_cornix/more_info.html (449 words)

	Jon Loman - research on crows
		The grey form, "the hooded crow" is bordered to the west and to the east by all fl crows with which it hybridizes.
		Nest distribution in a population of the hooded crow Corvus corone.
		Reproduction in a population of the hooded crow Corvus corone.
	www.biol.lu.se /zooekologi/jon/kraaka.htm (708 words)

	Crow City
		The carrion and hooded crows are likely to have evolved from the same fairly recent ancestor but in isolation from each other during an Ice Age, later stretching into the newly accessible country, eventually sharing lands.
		The hooded crow is fl but with a pale ash grey hood or cloak on the back of the neck, mantle, scapulars, back, rump, lower breast, abdomen, flanks, axillaries and under tail coverts.
		The hooded crow is unlikely to be confused with other crows close up because of its grey markings, but both crows are easily distinguished from the rook by their calls, their squarer tails, broader wings and slower wingbeat.
	website.lineone.net /~crowseed/crowcity/info/crow.html (716 words)

	CROW - LoveToKnow Article on CROW (Site not responding. Last check: 2007-11-06)
		By ornithologists it is also used in a far wider sense, as under the title crows, or Corvidae, is included a vast number of birds from almost all parts of the world, and this family is probably the most highly developed of the whole class Ayes.
		But both are essentially migrants, and hence it follows that when the fl crow, assummer comes to an end, retires southward, the grey crow moves downward, and in many districts replaces it during winter.
		Hardly a station or camp in British India is free from a crowd of feathered followers of this species, ready to dispute with the kites and the cooks the very meat at the fire.
	64.1911encyclopedia.org /C/CR/CROW.htm (827 words)

	Corvids of the Genus Corvus
		Crows are omnivorous, killing sick or dead animals and ridding the country of many carcasses.
		Mexican crows are smaller than their N American cousins and more colourful with a seasonal shift in sheen from purplish in November to March, to greenish from April to June.
		The Cuban Crow, Corvus nasicies, the White-necked Crow, Corvus leucocephalus, occur in Hispaniola and Puerto Rico.
	www.earthlife.net /birds/crows.html (2911 words)

	Crow City
		The crow family is thought to consist of the most highly evolved of birds, since they are remarkably adaptable to changes in their environment.
		The earliest remains of crows found in Britain were in Norfolk and Suffolk, dating from the warm Cromerian interglacial period of 500,000-600,000 years ago, when they would have lived alongside mastodons, extinct kinds of horse, cave lions and forest rhinoceros.
		Carrion crow remains have been discovered at the sites of the Glastonbury lake village of about 250 BC, although it is unclear whether their function there was as food, pet or oracle.
	www.crowcity.co.uk /info/family.html (677 words)

	Kraai
		The Hooded Crow at the shores of the Baltic.
		The Carrion Crow (or Black Crow) occupies the western parts of Europe, while the Hooded Crow occupies the eastern part.
		Crows make their nest in trees from March to June.
	www.gardensafari.net /english/pages/kraai.htm (314 words)

	CDC - DNA Vaccine for West Nile Virus Infection in Fish Crows (Corvus ossifragus)
		The crows were placed in four groups: 1) those inoculated IM with vaccine, 2) those that had oral vaccine, 3) positive controls (i.e., those that received placebo inoculation and viral challenge), and 4) room controls (i.e., those that received placebo inoculation and placebo challenge).
		The 9 crows in group 2 (8 fish crows and 1 American crow) were given 0.5 mg of the encapsulated DNA vaccine orally in 0.25 mL of PBS, and 20 fish crows (groups 3 and 4) were each inoculated and orally exposed as above except that a placebo was used in place of the vaccine.
		Both hooded crows (8) and American crows (10) are highly susceptible to infection with WNV with nearly 100% case-fatality rates.
	www.cdc.gov /ncidod/eid/vol9no9/03-0025.htm (2874 words)

	Hooded crow - The Royal Society for the Protection of Birds (Site not responding. Last check: 2007-11-06)
		The hooded crow is closely related to the carrion crow, which until recently was regarded as the same species.
		Unlike crows they can be more sociable in the feeding habits and groups of them may be seen together in fields.
		In the UK and Ireland, hooded crows prefer open country with scattered trees and rocky crags, moorlands, inland and coastal cliffs, woodland and forest edges, and mountains.
	www.rspb.org.uk /birds/guide/h/hoodedcrow/index.asp (227 words)

	Olga F. Lazareva, A. A. Smirnova, N. Michnevich, Z.A. Zorina and Zh. I. Reznikova (Site not responding. Last check: 2007-11-06)
		We studied this ability in 6 hooded crows at the age 60 - 180 days and in 12 budgerigars at the age 30 - 100 days with 4 and 2 tests, respectively.
		Because the exact age of crows was unknown, we use the time when bird begin to feed by itself as index of sensomotor development.
		Crows were also able to find food under the opaque cylinder, this ability emerged either at the same time as previous test or after it.
	www.u-picardie.fr /~LaboECCHAT/EMEAB4/Commun/Abstracts/Lazareva1.html (244 words)

	Birds
		Many members of the Crow Family are large and fl, and it takes a bit of practice before one can tell the difference between, for example, Crows, Rooks, Jackdaws and Ravens.
		In Ireland and North Scotland, the Carrion Crow is replaced by the Hooded Crow, a different race of the same bird.
		During the winter, many Hooded Crows fly a little further south, and can be found in the same parts of Britain as the Carrion Crow.
	www.naturegrid.org.uk /biodiversity/birds/crow.htm (1204 words)

	Hooded Crow Photo \| TrekNature
		Both are around the same shape and size as a rook (Corvus frugilegus), but the hooded crow is easily identified by its two-colour plumage; the body is a dirty grey, while the wings, tail, head and bib are fl.
		In Britain, this crow mainly occurs in north and western Scotland, it also occurs in Ireland and on the Isle of Man. Elsewhere it is widespread throughout central and northern Europe between the Arctic in the north to the Mediterranean in the south.
		Hooded crows are intelligent birds; in Sweden and Finland they have been seen reeling in fishing lines left in holes in the ice to obtain fish.
	www.treknature.com /gallery/Europe/Sweden/photo5184.htm (568 words)

	Use of number by crows: Investigation by matching and oddity learning. (Site not responding. Last check: 2007-11-06)
		Hooded crows were trained in two-alternative simultaneous matching and oddity tasks with stimulus sets of three different categories: color (fl and white), shape (Arabic Numerals 1 and 2, which were used as visual shapes only), and number of elements (arrays of one and two items).
		These three sets were used for training successively and repeatedly; the stimulus set was changed to the next one after the criterion (80% correct or better over 30 consecutive trials) was reached with the previous one.
		It was concluded that crows were able to apply the matching (or oddity) concept to stimuli of numerical category.
	seab.envmed.rochester.edu /abstracts/JeabAbstracts/73/_73-163.Htm (276 words)

	Emerging Infectious Diseases: DNA vaccine for West Nile virus infection in fi... @ HighBeam Research (Site not responding. Last check: 2007-11-06)
		After an acclimatization period of approximately 1 month, the 10 crows in group 1 (9 fish crows and 1 American crow [C. brachyrhynchos]) were inoculated IM with 0.5 mg of the DNA vaccine in a total volume of 0.5 mL (0.25 mL in each breast).
		The 9 crows in group 2 (8 fish crows and l American crow) were given 0.5 mg of the encapsulated DNA vaccine orally in 0.25 mL of PBS, and 20 fish crows (groups 3 and 4) were each inoculated and orally exposed as above except that a placebo was used in place of the vaccine.
		The death rate in these crows (4 [50%] of 8), was identical to that observed in the placebo-vaccinated group (5 [50%] of 10) and in a second group of unvaccinated fish crows (4 [50%] of 8) tested later (M.J. Turell and M. Running, unpub.
	www.highbeam.com /library/doc0.asp?DOCID=1G1:108647579&refid=ip_search (2730 words)

	Sketch: Hooded Crow (Site not responding. Last check: 2007-11-06)
		In Britain Hooded Crows live in northern and western Scotland and Carrion Crow over the rest of the country.
		Carrion Crows are basically fl but Hooded Crows have a hood (nape, back, most of underparts and rump) of ash grey.
		British and Irish breeding population estimate is 450,000 with 20,000 hybrids and 790,000 Carrion Crows.
	www.birdcare.com /bin/showsketch?hooded+crow (137 words)

	BBC - h2g2 - The War of the Crows
		Also known as the scald crow, or grey crow, the hooded crow is about 46cm in length, 100cm in wingspan.
		So perhaps carrion crows prefer milder climates; but no, Ireland is one of the mildest climates around and is entirely inhabited by hooded crows, not carrion crows.
		The hooded crows seem to have the upper hand at the moment, with more of Europe by area than the carrion crows, but the border area in Scotland is moving: the line is much further north than it was 100 years ago, which suggests that the carrion crows are winning in Great Britain.
	www.bbc.co.uk /dna/h2g2/A3347093 (1037 words)

	Why Two Crows
		They are fl Carrion Crows although only two fields away is the territory of a pair of fl and grey Hooded Crows.
		The crow is a symbolically significant animal to me, sacred as it is to the Celtic deity Lugh and the Greek Apollo.
		Crows are, they are not for us to like or dislike.
	www.twocrows.co.uk /why.html (308 words)

	Carrion Crow
		The two distinctive plumages of Carrion Crow and Hooded Crow offer a fascinating example of how living creatures change their appearances and distributions over evolutionary time.
		The grey and fl Hooded Crow is found in Ireland and northwestern Scotland.
		Crows are quite common birds in Garden BirdWatch gardens, with late spring and early summer the peak time for such observations.
	www.bto.org /gbw/Species/BIRDS_CROW.htm (341 words)

	BTO - Breeding Birds of the Wider Countryside: Hooded Crow
		In the UK, Hooded Crows occur in Northern Ireland, the Isle of Man, and in Scotland, mainly west and north of the Great Glen.
		Intermediate forms between Carrion and Hooded Crows, which predominate in a band across western Scotland, and occur less frequently elsewhere in the UK, are not included in either BBS index.
		Hooded Crows have increased markedly in Ireland since 1924 (Hutchinson 1989).
	www.bto.org /birdtrends2004/wcrhoocr.htm (232 words)

	Spiridonova L.N., Krjukov A.P. Genetic variability and differentiation of carrion crows, hooded crows and their hybrids ...
		RAPD-PCR analysis of genetic variability of carrion crows, hooded crows and their phenotypic hybrids from the zones of overlap of their areals and hybridization of parental forms in Siberia has been carried out.
		It was shown that the rate of genetic variability in carrion crows and hooded crows is less than in the hybrids.
		Nevertheless UPGMA and NJ dendrogrammes differentiate the individuals from the areals of carrion crows, hooded crows and from hybrid zone to different clusters.
	cytgen.com /en/2004/31-39N2V38.htm (241 words)

	Experimental infection of five species of raptors and of hooded crows with Francisella tularensis biovar palaearctica ...
		Experimental infection of five species of raptors and of hooded crows with Francisella tularensis biovar palaearctica
		Sixteen raptors and three hooded crows were infected experimentally with Francisella tularensis biovar palaearctica.
		One goshawk, one sparrow hawk and one hooded crow died during the experimental period, and the remaining 16 birds were killed 14-77 days after the first infection.
	www.jwildlifedis.org /cgi/content/abstract/24/1/15 (176 words)

	Corvus corone (Site not responding. Last check: 2007-11-06)
		Hooded Crows are easily distinguished from all other crows but the Carrion Crow is easily confused with a Rook.
		The Carrion Crow is a common resident except in northern Scotland where it is replaced by the Hooded Crow.
		Carrion Crows are widespread and numerous in most of Europe west of a line from Denmark to northern Italy.
	www.birdguides.com /html/vidlib/species/Corvus_corone.htm (282 words)

	Transitive responding in hooded crows requires linearly ordered stimuli. (Site not responding. Last check: 2007-11-06)
		Eight crows were taught to discriminate overlapping pairs of visual stimuli (A+ B-, B+ C-, C+ D-, and D+ E-).
		For 4 birds, the stimuli were colored cards with a circle of the same color on the reverse side whose diameter decreased from A to E (ordered feedback group).
		These circles were made available for comparison to potentially help the crows order the stimuli along a physical dimension.
	seab.envmed.rochester.edu /abstracts/JeabAbstracts/82/_82-001.Htm (190 words)

	BirdForum - Hooded Crow? (Site not responding. Last check: 2007-11-06)
		Is this a Hooded Crow or a Hooded Crow / Carrion cross.
		Hooded crow, what i think of as the northern version of the carrion crow, prob.
		Hi Birdman, the grouse and the hare have their colours as adaption to be camouflaged, but this cannot be the case for the crow, due to the birds very different behaviour from the above mentioned species and due to the fact that Hooded crows also occur in Turkey, for example...
	www.birdforum.net /showthread.php?t=14440 (1722 words)

	Even Crows Can Have Hangups
		The crows that built this nest are revealed as the ‘thieves’ who have been raiding a local compound and stealing wire hangers recently.
		Crows belong to the family Corvidae and are believed to be the most intelligent of all birds.
		Whether the pair of crows had made the cognitive connection of “hanging” coat hangers on drying lines for “hanging” their nest securely to their chosen tree is debatable.
	www.arabnews.com /?page=1§ion=0&article=41933&d=26&m=3&y=2004 (272 words)

	Gimme 5
		The carrion crow was, until recently, considered to be a race of the same species as the hooded crow (Corvus cornix), but it is now recognised as a separate species.
		It is the same size and shape as the hooded crow, but differs in that the plumage is entirely fl, with a green and bluish-purplish gloss.
		Where the distributions of carrion and hooded crows meet, there is a zone where interbreeding takes place and hybrids occur, which have intermediate plumage.
	www.canadiancontent.net /forums/viewtopic.php?p=54605 (419 words)

Try your search on: Qwika (all wikis)