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Sunday 20 March 2016

20-3-2016 MONTE CORONA, VALENCIA - WHITE WAGTAIL (Motacilla alba)


Population size
135-221 Mlnlnn
Life Span
12 years
Weight
25
goz
g oz 
Length
16-19
cminch
cm inch 
The White wagtail is a slender bird with the characteristic long, constantly wagging tail of its genus. There are a number of other subspecies, some of which may have arisen because of partial geographical isolation, such as the resident British and Irish form, the pied wagtail M. a. yarrellii, which now also breeds in adjacent areas of the neighbouring European mainland. The Pied wagtail exchanges the grey colour of the nominate form with black (or very dark grey in females), but is otherwise identical in its behaviour. Other subspecies, the validity of some of which is questionable, differ in the colour of the wings, back, and head, or other features. Some races show sexual dimorphism during the breeding season. As many as six subspecies may be present in the wintering ground in India or Southeast Asia and here they can be difficult to distinguish.

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