Koolmees met vreemd knobbeltje/gezwel aan poot

Gestart door Bas de Maat, november 22, 2012, 07:41:42 AM

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Bas de Maat

Laatst een koolmees in de tuin met een vreemd knobbeltje aan de poot.
Iemand enig idee wat dit zou kunnen zijn. Ik heb het nog nooit eerder gezien.
Zou het bijvoorbeeld een soort ziekte kunnen zijn of een vreemd vergroeide wond??
En komt het vaker voor??

Het betreft deze waarneming
http://waarneming.nl/waarneming/view/72251156
Koolmees - Parus major gezien op 2012-11-20 Rozendaal
Foto:


bij voorbaat dank Bas de Maat
--
Met Vriendelijke Groet,

Bas de Maat

Jeroen Nagtegaal

Ik zie ze wel eens met een gezwel, maar zo erg nog nooit... ziekte?
Groet, Jeroen Nagtegaal
Moderator subforum Ringen

Een geringde vogel gezien of gevonden.
Meld het hier of mail naar ringonderzoek@gmail.com

Bas de Maat

Waar dat ziekte vandaan komt weet ik niet. Ik had daar "neoplasma malignum" getypt, maar dan in het Nederlands, maar blijkbaar wordt dat op dit forum omgevormd naar ziekte...
--
Met Vriendelijke Groet,

Bas de Maat

Geert-Jan Kroon

Een flink gezwel inderdaad, dit zou ik geen 'knobbeltje' meer noemen. Desondanks ziet hij er toch redelijk vitaal uit. Gedroeg hij zich verder normaal of kon je zien dat hij hier last van had?
Groet,

Geert-Jan Kroon

Bas de Maat

Het leek alsof het er totaal geen last van had. Stond stevig op de poten en kon ook normaal vliegen.
Was redelijk agressief naar andere koolmezen, had duidelijk zoiets van dit voer is van mij en daar blijven jullie vanaf.
--
Met Vriendelijke Groet,

Bas de Maat

Wil

Lijkt mij dat de vogel pokken heeft; soortspecifiek voor de koolmees.
Het pokkenvirus wordt overgebracht  door steekmuggen.
Meer te lezen op www.atkv.nl/pdf/DeNatuurIndec2009_publiek.pdf  pagina 10 en 11
Groeten, Wil Lemmens
Geleen

hiskodevries

Was getekend Hisko de Vries.

Wil je een fotovraag stellen op het forum lees dan dit eerst https://forum.waarneming.nl/smf/index.php?topic=452369.0


Lowieke

In de tuin zie ik oko met regelmaat twee koolmezen met pokken, beide hebben de pokken rond de ogen. Twee maanden terug ook deze koolmees met een gezwel op de kop, het ziet er iets anders uit, iemand een idee of het hier ook om pokken gaat?

Jeroen.

gjcaspers

Zie ook dit bericht over vogelpokken bij Britse Koolmezen op ProMED-mail:
Published Date: 2012-11-28 08:52:45
Subject: PRO/AH/EDR> Avian pox - UK: great tit
Archive Number: 20121128.1427594
AVIAN POX - UK: GREAT TIT
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A ProMED-mail post
http://www.promedmail.org
ProMED-mail is a program of the
International Society for Infectious Diseases
http://www.isid.org

Date: Thu 22 Nov 2012
Source: BBC News [edited]http://www.bbc.co.uk/news/science-environment-20425314

Avian pox: great tit disease 'spread to UK by insects'
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The disease was first found in south-east England in 2006, but has spread rapidly around the country. It causes large growths on birds' beaks and eyes.A new study shows the strain originated in Scandinavia or Central Europe and was probably carried across the Channel by biting insects, such as mosquitoes.The findings have been published in 3 papers in the journal PLoS ONE. "The lesions can be very severe," said Dr Becki Lawson, a veterinarian from the Zoological Society of London (ZSL). "There is a very significant adverse impact on the individual bird's survival."The virus is a form of avian pox, which is a skin disease.Avian pox usually infects birds such as house sparrows, dunnocks, and starlings. But genetic analysis revealed that the strain hitting great tits in the UK is a different form of the virus, which originated in Europe.Although the disease can pass from bird to bird, scientists do not think that great tits carried it into the country because the birds do not migrate across the English Channel. Dr Lawson said: "It is more likely to be an insect vector, such as a mosquito, either moved by man or by wind-borne spread."The study charted the movement of the disease across the country. Since it arrived, it has spread across central England, Wales, and some cases are suspected in Scotland.A bird-monitoring study that has been running for more than 50 years in Wytham Woods in Oxfordshire also helped to shed light on the emerging disease. Researchers from the University of Oxford found that a range of tit species can catch the virus, but great tits were the most susceptible.The public are advised to regularly wash their feeders to stop the virus spreading. "Our results show that this new strain significantly reduces the survival of wild great tits and has particularly large effects on the survival of juvenile birds," said Dr Shelly Lachish, from the Edward Grey Institute at the University of Oxford. However, the team found that some birds were able to recover from an infection, and computer models suggest that although the disease would continue to spread it might not have too significant an effect on great tit numbers.Mike Toms, head of garden ecology at the British Trust for Ornithology (BTO), who also worked on the study, said: "What we've not seen yet is an impact in the wider population level. Our models don't predict that it's going to cause a population decline nationally -- but we need to be aware of the possibility."Because the disease can spread between birds and possibly through contaminated surfaces, he recommended that people should keep their feeding stations and feeders clean. "As always, clean them on a regular basis: ideally every week or fortnight, by cleaning, rinsing, and then air drying them," Mr Toms explained.The scientists stressed that the virus could not pass from birds to humans.The research team told BBC News that any sightings of birds displaying symptoms of the pox should be reported to the Royal Society for the Protection of Birds (RSPB)'s Wildlife Enquiries Unit.Dr Lawson said that the team of scientists, ornithologists, and vets who carried out the research would not have been able to study the emerging disease without the help of the public.Greenfinches have been badly hit by another new disease caused by a parasite. "We can't do this kind of work, to find out about the health of British wildlife, unless the public take the time to keep their eyes peeled and report signs of sick and dead birds to us," she said.Avian pox is not the only new disease that is having an impact on garden birds. In 2005, a disease called trichomonosis, which is caused by a parasite, was discovered in finches in the UK. It has since spread throughout the country and has also been reported in the Republic of Ireland. Greenfinches have been worst affected. A recent paper published in a Royal Society journal revealed that about 1.5 million breeding birds have been lost, and the number of greenfinches visiting gardens has declined by about 50 percent.

[Byline: Rebecca Morelle]

--Communicated by:ProMED-mail from HealthMap Alertspromed@promedmail.org

[Avian pox is a slowly developing disease of birds caused by several different strains of avipoxvirus. A variety of birds worldwide, including upland game birds, marine birds, Passeriformes and Psittaciformes can become infected.Avian pox occurs in 2 forms, the cutaneous being the most common. The cutaneous form of pox causes warty growths on unfeathered skin, sometimes in large clusters. The size and number of growths depend on the stage and severity of infection. Birds are often emaciated due to inability to feed (see picture of the lesions at http://partnersah.vet.cornell.edu/avian-atlas/sites/agilestaging.library.cornell.edu.avian-atlas/files/avian_atlas_assets/POX-038A%20x750.jpg). In the diphtheritic form, there are raised, yellow plaques on the mucus membranes of the mouth and throat.Transmission occurs via direct contact with infected birds, ingestion of food and water contaminated by sick birds or carcasses, or contact with contaminated surfaces such as bird feeders and perches. The virus enters through abraded skin. Insects, especially mosquitoes, act as mechanical vectors. The disease can be a significant mortality factor in some upland game bird populations during fall and winter months, in songbirds over winter, and in raptor populations.The great tit (_Parus major_) is a passerine bird in the tit family Paridae (see photo at http://www.birdforum.net/opus/images/thumb/4/46/GreatTit.jpg/550px-GreatTit.jpg). It is a widespread and common species throughout Europe, the Middle East, Central and Northern Asia, and parts of North Africa in any sort of woodland. It is generally resident, and most great tits do not migrate except in extremely harsh winters. Free-ranging great tits were first reported with florid skin lesions caused by avian pox in Norway in the early 1970s, but there are few reports of this disease in the family Paridae. Since 2005, there has been a marked increase in reports of avian pox in great tits, with the disease confirmed in multiple central European countries. In the UK, tits were first reported affected in 2006.

The scientific articles referred to in the text can be accessed at http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0040176 and http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0038316. They include maps showing the spatio-temporal pattern of spread and a picture of a great tit with a lesion.
- Mod.PMBA HealthMap/ProMED-mail map can be accessed at: http://healthmap.org/r/1lNY.]
See Also
Avian pox - USA (03): (AZ) hummingbird, susp 20120702.1187140
Avian pox - USA (02): (PA) eagle 20120521.1139926
Avian pox - USA: (MT) wild turkey 20120316.1072516
Avian pox, garden birds - UK: (England) 20120310.1066814
2006
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Avian pox virus, penguins - Falkland Islands
20060224.0611
1997
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Avian pox, albatross - New Zealand: RFI
19970310.0531
Groet,
Gert-Jan Caspers