pirayaguara's picture

Pied wagtail

Observed: 2nd March 2012 By: pirayaguarapirayaguara’s reputation in Birdspirayaguara’s reputation in Birdspirayaguara’s reputation in Birdspirayaguara’s reputation in Birds
pied wagtail ajw.jpeg
Description:
Identifications
Species interactions

No interactions present.

Species with which Pied Wagtail (Motacilla alba subsp. yarrellii) interacts

Comments

ophrys's picture

yarrellii

It is yarrellii, because of the black back, which alba lacks. The latitude is nothing to do with the identification, as both are common here at different times.

Ian
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Wildlife Ranger's picture

Pied Wagtail

The basis of a Sub Sp is local adaption The link says it all

http://en.wikipedia.org/wiki/File:MotacillaAlbaDistribution.svg

http://en.wikipedia.org/wiki/White_Wagtail

Your point about the variation in species is seen in the link above.

It is correct to refer to the dominant Sub Spp at this Latitude as subsp. yarrellii you are also correct to point out that there may be some overlap

Best Wishes

WLR

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David Jardine's picture

Dominant subspecies?

During migration there are some locations in Britain where the dominant subspecies is M alba alba (White Wagtail), so it could be best to qualify such statements, by referring to the breeding distribution.

ophrys's picture

Latitude

The issue of latitude is not important, either, since alba is found both north and south of the UK, and level with it in continental Europe.

Ian
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