Nedenstående pressemeddelelse er netop udsendt er BOURC.
BRITISH ORNITHOLOGISTS' UNION RECORDS COMMITTEE
Taxonomic changes to the British List
The following recommendations relating to the taxonomy of birds on the British List will take effect from the publication of the BOURC Taxonomic Subcommittee's (BOURC-TSC) next report in Ibis.
Canada Goose (Branta canadensis)
Canada Goose is currently treated as a single polytypic species. Molecular, ecological and behavioural evidence suggest that populations of 'large-bodied' and 'small-bodied' taxa are best treated as separate species.
- Greater Canada Goose (B. canadensis) - polytypic, with subspecies
canadensis, fulva, interior, maxima, moffitti, occidentalis and parvipes)
- Lesser Canada Goose (B. hutchinsii) - polytypic, with subspecies
hutchinsii, leucopareia, minima and taverneri).
Note that B. c. parvipes, often referred to as a 'lesser' Canada Goose, is placed within the Greater Canada Goose group.
Greater Canada Goose is on Category C of the British List on the basis of the established naturalised population. No vagrant 'Canada Goose' had, prior to this recommendation, been assigned to subspecific level. Records will now be reviewed to determine whether any individuals can be assigned to either group.
The British List remains on 568 species
(Category A = 547; Category B = 12; Category C = 9).
English version