The taxonomy used by Utsira bird observatory for the Utsira list has been that of the British Ornithologists´ Union Records Committee (BOURC) since 1992, but is now changed to that of the IOC world bird list. This change comes partly because of BOURC themselves no longer has a taxonomic committee, partly because IOC is followed by an increasing number of organizations and committees in more and more countries.
For Utsira’s part this change of taxonomic authority will first and foremost be seen in the different sequence of species, particularly among non-passerines. Secondly in certain taxonomic changes. The species that will change status are:
Bean Goose
Previously Bean Goose Anser fabalis with subspecies fabalis and rossicus, now Taiga Bean Goose A. fabalis and Tundra Bean Goose A. serrirostris.
Isabelline Shrike
Previously Isabelline Shrike Lanius isabellinus with subspecies isabellinus and phoenicuroides, now Isabelline Shrike L. isabellinus and Red-tailed Shrike L. phoenicuroides.
Southern Grey Shrike
Previously Southern Grey Shrike Lanius meridionalis, now Great Grey Shrike L. excubitor of subspecies pallidirostris.
Subalpine Warbler
Previously Subalpine Warbler Sylvia cantillans with subspecies inornata/iberiae and albistriata, now Western Subalpine Warbler Curruca iberiae and Eastern Subalpine Warbler C. cantillans.
Siberian Stonechat
Previously Siberian Stonechat Saxicola maurus with subspecies variegatus and maurus/stejnegeri, now Siberian Stonechat S. maurus with subspecies hemprichii and maurus.
Black-eared Wheatear
Previously Black-eared Wheatear Oenanthe hispanica, now undetermined Western Black-eared Wheatear O. hispanica / Eastern Black-eared Wheatear O. melanoleuca.
For an updated species list, see Checklist, or directly here
Geir Mobakken
