Cambrian Ornithological Society

COS is the county bird club for northwest Wales and produces the annual Cambrian Bird Report for the counties of Caernarfon, Anglesey and Meirionnydd. COS is affiliated to the Welsh Ornithological Society, which hosts these pages.

Indoor meetings are held at Pensychnant Conservation Centre at 7.30pm. Hot drink and biscuits provided afterwards. Donation requested: £1 (members), £2 (non-members).

The most recent Bulletin (no. 188) can be downloaded here.


Most field trips start at 10 am unless otherwise stated. Non-members welcome. Bring lunch, stout footwear and waterproofs. For further information, contact Geoff Gibbs (01248 681936) or Gareth Jones (01248 601319).

Friday 4th October:  A fish with feathers by Michael Leach

Wildlife photographer Michael is a favourite with the Cambrian OS. His last talk on Owls was a masterpiece. This time it’s…..Penguins.

Tuesday 29th October: Field trip to Burton Mere RSPB and Heswall area

The Dee Estuary and Burton Mere are always good, with an excellent chance of both Harriers and often owls. Leader to be notified. Meet 8.30am, Broad Lane, Heswall where it meets Target Road. (Map ref: SH253819).

Friday 1st November: Farming and Wildlife by Nick Watts (Vine House Farm)

Nick Watts manages Vine House Farm, near Spalding in Lincolnshire, for wildlife and runs Vine House Farm Ltd for bird foods and accessories – part of the profits go to the Wildlife Trusts.

Sunday 17th November: Field Trip to Martin Mere (by coach)

The event includes the Martin Mere Birdwatching Festival. Leader Jeff Williams. Coach picks up at Bangor, Llanfairfechan, Penmaenmawr, Llandudno Junction and Colwyn Bay. Advance reservation compulsory and £15 coach fare payable in advance and not refundable. Contact Jeff Williams, Plas Elwy, Llanfairtalhaiarn LL22 8YT.

Friday 6th December: Bird Conservation Stories 2019 from the Wildlife Trust by Chris Wynne (NWWT). Note that the talk is preceded by the AGM.


In 2017 COS published Birds of Caernarfonshire, the first county avifauna since 1997, written by Rhion Pritchard. Click here to order yours (discount for COS and WOS members).

COS has also published Adar Meirionnydd/Birds of Meirionnydd, written by Rhion Pritchard. Click here for details.

Members receive the Cambrian Bird Report and four Bulletins (click here for the latest issue) each year. And there’s a year-round programme of indoor meetings and field trips. The annual subscription, due in January, is £12 (£14 for couples, £6 for student/junior members).


Hon. President: Dr Jeff Williams, Plas Elwy, Llanfair T.H., Abergele LL22 8YT
Tel: 01745 720307. Email

Hon. Treasurer: David Lee, Yr Hen Berllan, Gwyllt Road, Llanfairfechan LL33 0EG.
Tel: 01248 681268. Email

Hon. Secretary: Julian Thompson, Pensychnant, Sychnant Pass, Conwy LL32 8BJ.
Tel: 01492 592595. Email

Membership Secretary: Maryann Williams Plas Elwy, Llanfair T.H., Abergele, LL22 8YT.

Tel: 01745 720307 Email

Bird Report Editor: John Small, 4 Roosevelt Terrace, Llandudno Junction
Tel: 01492 592510. Email

Bulletin Editor: Geoff Gibbs, Fron Wen, Valley Road, Llanfairfechan LL33 0ET
Tel: 01248 681936.

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