Taksonomiske anbefalinger fra AERC

Hej

Jeg løb lige rapporten igennem. Der er ikke så meget i den der vedrører den danske liste. Der er faktisk kun to anbefalinger der kunne ændre på den danke list pt:

Sølvmåge Larus argentatus anbefales splittet til seks arter:

L. argentatus (incl. argenteus)
L. smithsonianus
L. vegae (incl. mongolicus)
L. cachinnans
L. michahellis (incl. atlantis)
L. armenicus

og Lille Fluesnapper Ficedula parva anbefaldes splittet i F. parva og F. albicilla (Taiga Fluesnapper).

Derudover er der stof til mange mørke vinteraftener og videre fordybelse i taksonomiske problemer. En hel del af disse vil kunne give flere danske sofaarter i fremtiden når mere viden forefindes.

Mvh Rasmus

Jeg er for nyligt begyndt at bruge Clements taxonomi, der er den officielle for American Birding Association (fordi jeg købte et database-program hvor fuglelisten var baseret på denne). Der er Sølvmåge allerede splittet op, men i et lidt anderledes mønster end her foreslået: Michahellis og Cachinnans er stadig holdt sammen under gulbenet sølvmåge, medens (så vidt jeg lige kan overskue ud fra hukommelsen) de øvrige split er foretaget.

Mvh
Niels Jørgen Larsen

Jeg synes Rasmus kommer lidt for hurtigt rundt om ændringerne. Der er flere her i Dk godkendte splits, der stadig er til overvejelse, eksempelvis Lille og Stor Gråsisken, Sort og Gråkrage. Så for dem, der håber på sofaarter, er det måske et skridt frem og et tilbage.

vh
HMT

Næ, det er skam helt bevist at jeg ikke nævner andre end de split. Alle de andre er nemlig ikke officielle anbefalinger fra udvalget. Her har de ikke kunnet finde nok enighed eller de afventer mere information. Tag f. eks Gråsisken, her lægger de op til at de enkelte landes sjældenhedsudvalg selv må tage stilling til om det er en eller to arter. Kragerne synes jeg personligt er lidt uldne i kanten, da de bliver sorte i øst igen. Men jeg vil ærligt indrømme at jeg ikke læste alle 112 sider, især ikke dem de arter der var i vente position. Giv mig nogle dage og jeg skal glædeligt komme med flere kommentare til rapporten hvis der er nogen der er interesserede...

Mvh Rasmus

BOURC fulgte hurtigt efter AERC. Nedenstående er fra en netop udsendt pressemeddelelse.


5 December 2003

A Press Release from

BRITISH ORNITHOLOGISTS' UNION RECORDS COMMITTEE

BOURC Taxonomic Sub-committee announces important taxonomic decisions relating to the British List.

The Taxonomic Sub-committee (TSC) of the British Ornithologists' Union Records Committee (BOURC) has recently completed work on a series of taxonomic recommendations relating to the British List.

A full report of the current recommendations, with supporting information, will appear in the January 2004 issue of Ibis (Ibis 146: 153-156).

Amongst the recommendations are the following:

Tundra Swan Cygnus columbianus. Bewick's Swan Cygnus c. bewickii and Whistling Swan C. c. columbianus should continue to be treated as conspecific.

Pied Wheatear Oenanthe pleschanka to be treated as two species, Pied Wheatear O. pleschanka and Cyprus Wheatear O. cypriaca. Only O. pleschanka has been recorded in Britain.

Desert Warbler Sylvia nana to be treated as two species, Asian Desert Warbler S. nana and African Desert Warbler S. deserti. All British records have been assigned to S. nana.

Red-breasted Flycatcher Ficedula parva to be treated as two species, Red-breasted Flycatcher F. parva and Taiga Flycatcher F. albicilla. Two recent records of Taiga Flycatcher are under consideration.

Pied Flycatcher Ficedula hypoleuca. Atlas Flycatcher to be treated as a full species Ficedula speculigera. There are no claims of this species in Britain, but the recommendation clarifies the world distribution of F. hypoleuca.

The full list of recommendations in the Taxonomic Sub-committee's forthcoming report have been accepted by the BOURC, and will be implemented when formally published in the January 2004 issue of the BOU's journal, Ibis (Ibis 146: 153-156).

The BOURC-TSC has also been working with the Association of European Rarities Committees Taxonomic Advisory Committee (AERC-TAC), which has recently posted taxonomic information on the AERC website (http://aerc.be/aerc_tac.htm).

The AERC-TAC document includes a series of taxonomic recommendations for European birds. As the document clearly states, this is not a final version. Many items and opinions expressed in the document are still being discussed or have not yet been agreed among the European taxonomic committees.

Although the BOURC-TSC is listed as a contributor of the document, the contents of the current version are not supported by the BOU, nor are they supported by all the other European taxonomic committees, e.g. the Commissie Systematiek Nederlandse Avifauna (CSNA) are issuing their own statement to this effect. The AERC-TAC recommendations do not affect the British List.

The report of BOURC-TSC, which is published in Ibis, remains the official publication of the BOU.