Cemlyn Sandwich Terns / Môr-wenoliaid pigddu Cemlyn © Henry Cook
Ffliw Adar
Diweddariad Mai 2023
Mae argyfwng y ffliw adar yn parhau i ddylanwadu ar boblogaethau yr adar gwyllt. Oherwydd y bygythiad hyn mae Defra a Llywodraeth Cymru wedi paratoi canllaw ymarferol ynglŷn â ffliw adar. Mae “Strategaeth Liniaru ar gyfer Ffliw Adar mewn Adar Gwyllt yng Nghymru a Lloegr” yn gosod cynlluniau i ostwng effaith ffliw adar ar y poblogaethau o adar gwyllt tra’n amddiffyn iechyd y cyhoedd, yr amgylchedd ehangach a’r economi wladol. Gall ddarganfod y diweddaraf ar y sefyllfa yng Nghymru yma:
Ffliw adar: y diweddaraf (Llywodreath Cymru)
Ychydig iawn o achosion sydd wedi eu cofnodi mewn adar gwyllt yma yng Nghymru ac mae diweddariadau yn cael eu creu gan lywodraeth y DU:
Bird flu (avian influenza): cases in wild birds - GOV.UK (www.gov.uk)
Rydym yn hynod bryderus am yr effaith y bydd yr achosion hyn yn ei cael ar ein poblogaethau o adar gwyllt sydd eisoes dan fygythiad ar adeg pan mae angen i ni ganolbwyntio ar feithrin gwytnwch mewn poblogaethau sy’n agored i niwed drwy fesurau adfer a gwarchod rhywogaethau. Amlygodd blog gan Joe Llanos o’r Ymddiriedolaethau Natur yr haint ffliw adar fel dim ond arwydd arall o’n ecosystem afiach.
Blog: Joe Llanos - Yr Ymddiriedolaethau Natur
Yn 2023 rydym wedi bod yn monitro’r sefyllfa ar draws ein gwarchodfeydd natur a thalu sylw agos i’r sefyllfa yng Nghemlyn lle mae’r tymor wedi dechrau yn barod. Hyd yn hyn mae edrych petai pethau yn parhau.
Yn 2022 cafwyd dymor da yn Cemlyn gyda channoedd o gywion yn bwrw eu plu ond mewn mannau eraill tarodd ffliw adar yn ddramatig iawn.
Collwyd ambell i gytref yn Yr Iseldiroedd (Den Noord) a Ffrainc (Oye-Plague) hyd at 70% o’i hadar. Ac yn y DU, fe oedd cytrefi o fôr-wenoliaid ar y arfordir dwyreiniol eu taro’n wael iawn. Caewyd yr Isle of May ac Ynysoedd y Farne i’r cyhoedd a chwalwyd cytref y môr-wenoliaid ar Ynys Coquet yn cynnwys poblogaeth sylweddol o Môr-wenoliaid gwridog. Mae’n edrych nad ydi cytrefi adar môr Iwerddon wedi dioddef.
Canllawiau DEFRA
Gall adar gael eu heintio gyda feirws ffliw adar drwy ddod i gysylltiad ag adar unigol sydd wedi'u heintio neu gynhyrchion gwastraff. Yn ogystal â dofednod domestig, gall adar gwyllt, gan gynnwys adar dŵr, gario a throsglwyddo'r feirws heb ddangos tystiolaeth o glefyd. Symud dofednod o amgylch y byd, symudiad adar gwyllt a mudo yw'r prif risgiau o ran trosglwyddo'r feirws.
Mae’r risg y bydd pobl yn dal ffliw adar gan adar gwyllt yn isel iawn, ond argymhellir o hyd i bobl beidio â chyffwrdd mewn adar sâl neu farw na’u codi. Rhowch wybod am fwy na 3 o adar dŵr gwyllt marw (elyrch, gwyddau neu hwyaid) neu adar môr, neu fwy na 5 aderyn arall neu 1 aderyn ysglyfaethus marw, i linell gymorth DEFRA (03459 33 55 77).
Ewch i wefan DEFRA am ragor o fanylion DEFRA
Gwefan Llywodraeth Cymru: WALES
Yr Effaith ar Waith Cadwraeth YNGC
Wrth i'r sefyllfa genedlaethol barhau i ddatblygu rydym wedi cyhoeddi canllawiau i staff a gwirfoddolwyr ar sut i ymateb pe baent yn dod ar draws adar marw. Fel rhan o'n gwaith iechyd a diogelwch parhaus rydym wedi diweddaru ac ychwanegu at ein canllawiau. Am y tro mae'r gwaith yn parhau yn ein gwarchodfeydd natur.
Bwydo Adar yr Ardd
Ar hyn o bryd yr awgrymiad yw glanhau y bwydydd adar yn wythnosol gyda diheintydd addas ac fod glanweithdra personol dda yn cael ei ddilyn tra yn gwneud hyn. Mae canllawiau pellach i gael ar wefan y BTO.
The bigger picture
Sadly, Avian flu is a disease that is spread between wild birds and aquatic birds like gulls, ducks and geese are considered most at risk. We can’t stop this happening, but we can help our wild birds to be healthy and thrive, to withstand disease outbreaks like this. They already face pressures from habitat loss, pollution and a decline in insects and other food sources. It’s vital that we see stronger leadership on helping wild birds recover through a range of policy decisions. Entire UK populations of seabirds are at risk of being lost.
The current situation
As the avian flu crises continues to impact wild bird populations, there are further cases reported in black-headed gull colonies across England and Wales. In response to this threat Defra and the Welsh Government produced practical guidance to the response to the growing threat. The ‘Mitigation Strategy for Avian Influenza in Wild Birds in England and Wales’ sets out plans to mitigate the impact of avian influenza on wild bird populations whilst protecting public health, the wider environment and the rural economy. The most recent updates on the situation in Wales can be found here:
Avian influenza (bird flu): latest update | GOV.WALES
Regular updates are also produced by the UK government:
Bird flu (avian influenza): cases in wild birds - GOV.UK (www.gov.uk)
We are extremely worried about the impact that this outbreak will have on our already threatened wild bird populations at a time when we need to focus on building resilience in vulnerable populations through species recovery and conservation measures.
DEFRA Guidelines
Birds can be infected with the avian influenza virus through contact with infected individual birds or waste products. As well as domestic poultry, wild birds including waterfowl can carry and transmit the virus without showing evidence of disease. The movement of poultry around the globe, wild bird movement and migration are the main risks of transmission of the virus.
The risk of people contracting avian flu from wild birds is very low, but it is still recommended that sick or dead birds are not touched or picked up. Please report more than 3 dead wild waterfowl (swans, geese or ducks) or seabirds, or more than 5 other birds or 1 dead bird of prey to the DEFRA helpline (03459 33 55 77).
Please visit DEFRA’s website for more details DEFRA
Welsh Government website: WALES
Impact on NWWT Conservation Work
As the national situation continues to evolve we have issued guidance to staff and volunteers on how to respond should they encounter dead birds. As part of our ongoing health and safety work we have updated and added to our guidance. For the time being work continues on our nature reserves.
Feeding garden birds
It is currently recommend that bird feeders are cleaned weekly with an appropriate disinfectant and good personal hygiene is followed while doing this. There is further guidance on the BTO web site
Read more about what the Wildlife Trusts are calling for
- Government to develop a national strategy to help wild bird populations recover
- Effective monitoring, surveillance, research and reporting systems in place to build real-time understanding of the virus and its progress in wild birds
- Resilience built into vulnerable populations through recovery and conservation measures. This includes avoiding damaging development at sea and reduction of seabirds killed in bycatch
- Government to issue a moratorium on releasing large numbers of non-native gamebirds when avian flu is present across the country
- A new approach to poultry farming – intensive units that house thousands of hens and other domestic birds in barns are known to exacerbate the problem of contagious diseases, by providing ideal conditions for emerging pathogens to develop, which can then spread to wild birds
- More investment into how and why this is happening, to stand the best chance of avoiding similar tragedies in the future
- More resources for wildlife and nature charities to help with monitoring and tackling the problem
A blog from Joe Llanos at the Wildlife Trusts highlights avian flu as just another symptom of our ailing ecosystems:
