GRC Blog

Welcome to the GRC Recorders pages. This blog provides details on all the relevant news of Glamorgan’s scarcer birds, plus all BBRC & WRP decisions that affect us locally. It will also be used to document the status and occurrence of these scarcer species and we welcome contributions from anyone with photographs, artwork or documentation of rarities past, present and future. The GRC also welcomes all seawatching news from around Glamorgan and news of passage migrants in spring & autumn, uncommon birds in our area and unusual behaviour.

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The Glamorgan Rarities Committee, in conjunction with the Glamorgan Bird Club & Gower Wildlife , have agreed to co-operate with the Welsh Ornithological Society in the sharing of bird records & photographs in the interest of keeping accurate records and to promote birdwatching in North, Mid & South Wales.

Thursday, 20 September 2012

Important New Taxonomic Changes

The BOU have announced some taxonomic changes to the British List.
Those changes which directly effect us here in Glamorgan are:

Generic changes (note the new generic names)

Ruff is now Calidris pugnax

Buff-breasted Sandpiper is now Calidris subruficollis
This group also contained the species below, although not on the VC41 list, it has the potential to turn up here.
Broad-billed Sandpiper Calidris falcinellus

Cory’s Shearwater Calonectris diomedea to be treated as three species:
• Cory’s Shearwater Calonectris borealis (Category A)
• Scopoli’s Shearwater Calonectris diomedea (Category A)
• Cape Verde Shearwater Calonectris edwardsii (extralimital)

Cory's Shearwater has occurred seven times in Glamorgan, four of which are in Eastern Glamorgan, the last being in August 2011. The species is a Welsh rarity and not adjudicated locally, so I don't know how this will effect us in Glamorgan as yet. Records committees could choose to approach this sympathetically and say all those records of Calonectris sp. seen previously will remain as such (the old Cory's Shearwater) and all new records now seen off our waters will now have to eliminate the other two before being considered to exact species, which I'm afraid may prove very difficult indeed, given the fact that all our records have been recorded by seawatching, usually during or just after bad weather, at distance and in indifferent light conditions.

For more information on this article please go to [copy & paste]:


Barry Stewart said...

For the record, we did measurements of the one picked up at Swansea, which proved to be borealis.

Phil Bristow said...

Good job, Barry. If the unthinkable happens and previous records get relegated to Calonectris sp (heaven forbid) then at least Cory's will be secure on the Glamorgan list, and your gripper might take a bit of unclamping!

Barry Stewart said...

A similar scenario to the skua in box at Kenfig, it's on my birds I have measured list, but not my birds observed in the wild list. Still, a good record for the county.