Monday, 27 July 2015

Azores rarities past, present and future

Northern Parula on Flores, Azores, October 2012. Determining the number of some Nearctic vagrants is tricky.
I’ve been spending some time recently looking at Azores rarities records, partly for a new annotated checklist of Western Palearctic birds I’m working on (more on that another time), and partly through my personal interest in the islands’ birds which now extends to assessing records as a member of the Portuguese Rarities Committee (PRC).

It’s been some time since the committee’s last annual report was published, though two more recent editions are ready and now with SPEA, Portugal's BirdLife partner. The workload of the committee has increased significantly in recent years, in tandem with the growth in observer coverage and rarity-finding in the islands. The most high-profile rarities in this mid-Atlantic archipelago are, perhaps unsurprisingly, of Nearctic origin, and in the space of a decade – since the famous fall-out of Hurricane Wilma hit the islands in October 2005 – the Azores have far outpaced Scilly, south-west Ireland and Iceland to become easily the best location for ‘Yank’ vagrants on this side of the pond.

It may seem strange that precise figures for some species are hard to determine, but those involved in the Azores birding scene are attempting to formalise the process of documenting, assessing and publishing records. Until recently the comprehensive Birding Azores database was gospel, but with the huge volume of records since 2011 it is still undergoing the lengthy process of being updated. An interesting new initiative, the Azores Rare and Scarce Bird Report, got under way last year with the first instalment covering 2013 – my review of this publication will appear in September’s Birdwatch.

Five of the 16 Rose-breasted Grosbeaks recorded in the Azores prior to 2012 have not yet been officially accepted.
At some point, however, efforts will need to come together so that the nascent Azores Bird Club is energised and efforts crystallise with the updating and then ongoing upkeep of what must be an official record for the islands, ideally with PRC backing. This process has been started and progress is being made – the two PRC reports in the pipeline deal with many historical Azores records – but inevitably there’s a long way to go.

In the meantime, having recently worked through the long list of vagrant Nearctic landbirds recorded in the islands, something which struck me is the diversity of ‘Yanks’ recorded elsewhere in the Western Palearctic but not in the Azores. These include Eastern Phoebe, Acadian, Alder, Least and Fork-tailed Flycatchers, Eastern Kingbird, Red-breasted Nuthatch, Northern Mockingbird, Brown Thrasher, Varied Thrush, Veery, Evening Grosbeak, Louisiana Waterthrush, Cape May, Cerulean, Bay-breasted, Blackburnian, Palm and Wilson’s Warblers, Yellow-headed Blackbird, Brown-headed Cowbird, Common Grackle, Song, Red Fox and Lark Sparrows, and Eastern Towhee. The islands may be excellent for Nearctic 'megas', but they can't claim full bragging rights just yet.

Such species are a reminder that there’s still plenty to aim for in discovering new birds for the islands, perhaps even the Western Palearctic. Actively searching for American rarities is a deliberate strategy for those visiting in autumn, and though often hard work it usually pays off. My own personal tally of Nearctic vagrants in the Azores reached 64 species after last year’s trip (read the tour report here*), and it is certainly not the highest in the islands. This October’s tour, my 15th visit and ninth leading a Birdwatch group, will hopefully add to that list; here's an illustrated retrospective on all those trips since the first in 1994.

*Azores tour reports: 2014 | 2013 | 2012 | 2011 | 2010 | 2009

1 comment:

  1. "In the meantime, having recently worked through the long list of vagrant Nearctic landbirds recorded in the islands, something which struck me is the diversity of ‘Yanks’ recorded elsewhere in the Western Palearctic but not in the Azores."

    Interesting observation.

    I'll start with the obvious: many more birdwatchers have spent many more hours for many more years in northern/northwestern Europe trying to find the odd vagrant.

    But I wonder if it may also result from the differences in the number and the size of ships that travel eastawards across the Atlantic in the sea lanes towards N Europe, that do not reach near the Açores, and those that cross azorean waters ...

    Pedro Cardia



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