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THE MYSTERIOUS WAYS OF YELLOW WAGTAILS...

Specimen of the Blue-headed Wagtail Motacilla f.flava - page g

(Section B: migrant birds of the area where the picture was taken.)


In this section B you will find pictures of birds photographed while on migration.      
(go to 'migrant' section C > )(h)                     

april - picts 1-13

07Blue-headed Wagtail Motacilla f.flava 17042006 3 Stellendam1

1 Blue-headed Wagtail Motacilla f.flava 17042006 3 Stellendam, The Netherlands


08Blue-headed Wagtail Motacilla f.flava 17042006 4 Stellendam2

2 Blue-headed Wagtail Motacilla f.flava 17042006 4 Stellendam, The Netherlands


09blue-headed Wagtail Motacilla f.flava 17042006 Strijen3

3 Blue-headed Wagtail Motacilla f.flava 17042006 Strijen, The Netherlands


10Blue-headed Wagtail Motacilla f.flava 22042006 1 Philipsdam4

4 Blue-headed Wagtail Motacilla f.flava 22042006 1 Philipsdam, The Netherlands


11Blue-headed Wagtail Motacilla f.flava 22042006 2 Philipsdam5

5 Blue-headed Wagtail Motacilla f.flava 22042006 2 Philipsdam, The Netherlands


12Blue-headed Wagtail Motacilla f.flava 22042006 3 Philipsdam6

6 Blue-headed Wagtail Motacilla f.flava 22042006 3 Philipsdam, The Netherlands


13Blue-headed Wagtail Motacilla f.flava 22042006 4 Philipsdam7

7 Blue-headed Wagtail Motacilla f.flava 22042006 4 Philipsdam, The Netherlands


14Blue-headed Wagtail Motacilla f.flava 22042006 Philipsdam8

8 Blue-headed Wagtail Motacilla f.flava 22042006 Philipsdam, The Netherlands


16Blue-headed Wagtail Motacilla f.flava pale individ 22042006 2Stellendam9

9 Blue-headed Wagtail Motacilla f.flava pale individ 22042006 2 Stellendam, The Netherlands


17Blue-headed Wagtail Motacilla f.flava pale individ22042006 Stellendam10

10 Blue-headed Wagtail Motacilla f.flava pale individ 22042006 Stellendam, The Netherlands


20Blue-headed Wagtail Motacilla f.flava with a yellow rump25042006 OTonge11

11 Blue-headed Wagtail Motacilla f.flava with a yellow rump25042006 Oude Tonge, The Netherlands


21Blue-headed Wagtail Motacilla flava 25042006 4 Oude Tonge.jpg12

12 Blue-headed Wagtail Motacilla flava 25042006 4 Oude Tonge, The Netherlands


22Blue-headed Wagtail Motacilla f.flava with yellow rump25042006 OTonge13

13 Blue-headed Wagtail Motacilla f.flava with yellow rump25042006 Oude Tonge, The Netherlands


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(go to 'migrant' section C > )(h)


a - White Wagtails
b - White Wagtails
c - White Wagtails

d - Pied Wagtail Motacilla alba yarrellii

e - Transbaicalian White Wagtail Motacilla alba baicalensis
ee - White wagtail Hybridisation
  The mysterious ways of the yellow wagtails A-B-C-D-E-F-G-H-I
f - Blue-headed Yellow Wagtail Motacilla flava flava - A
g - Blue-headed Yellow Wagtail Motacilla flava flava - B
h - Blue-headed Yellow Wagtail Motacilla flava flava - C
i - British Yellow Wagtail Motacilla flava flavissima - D
j - Grey-headed Yellow Wagtail Motacilla flava thunbergi - E
- Italian OR Ashy-headed Yellow Wagtail Motacilla flava cinereocapilla - F
l - Spanish Yellow Wagtail Motacilla flava iberiae  - G
m - Sykes' Yellow Wagtail Motacilla flava beema - H
n - Black-headed Wagtail Motacilla flava feldegg
o - Eastern Yellow Wagtail Motacilla flava tschutschensis - I
p - Citrine Wagtails                                                       
q1-2-3 - Water, Rock & Buff-breasted Pipit Anthus rubescens
   

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RECAP: THE MYSTERIOUS WAYS OF YELLOW WAGTAILS...
 
Under favourable weather conditions Western Europe can expect influxes of a variety of representatives of the Yellow Wagtail Motacilla flava Complex which is described in great detail by Per Ahlström & Krister Mild in the monograph Pipits & Wagtails of Europe, Asia and North America (publ.by Christopher Helm).
 
In a good spring with persistent SE winds between the middle of April and the middle of May large numbers of Yellow wagtails arrive in the Rhine-Meuse delta, here in the SW Netherlands where we live. The majority of the birds arriving in April are nominate Blue-headed Wagtails Motacilla f. flava whereas in May northern Grey-headed Wagtails Motacilla f. thunbergi gradually take over. In between these two others such as Yellow Wagtails Motacilla f. flavissima of which small numbers breed locally,as well as individual Black-headed Wagtails Motacilla f. feldegg, Citrine Wagtails Motacilla citreola, birds resembling Sykes' Wagtail Motacilla f. beema, and forms such as 'Dombrowski' and 'Superciliaris' appear on passage.
 
Interestingly the groups of migrants consist mainly of males as the females seem to arrive on an individual ticket. May be this explains the paucity of published pictures of females. In The Netherlands two races breed, the nominate being the commonest while small numbers of flavissima breed in the West of the country in both cultivated areas and saltmarshes. No case of hybridisation between flava and flavissima has ever been reported here and in any case would be very difficult to proof without the help of colour-ringing individuals and close observation of pairs.
 
In Birding World (Vol) 20: 104-112 March 2007, Philippe Dubois describes the confusing situation on the French side of the English Channel where he claims multiple hybridisation between Blue-headed nominate and Yellow Wagtail  which he calls 'Channel Wagtail'; nominate x Spanish Wagtail M.f.iberiae: 'Middlewest' Wagtail; Spanish Wagtail x Italian Wagtail M.f.cinereocapilla: 'Mediterranean' Wagtail; and Italian Wagtail x nominate flava which he calls 'Eastern Wagtail'.
By means of this complex hybridisation scheme he explains why some individuals look like f.i. Sykes Wagtail Motacilla f. beema but are in fact according to him a cross between flava and flavissima so-called 'Channel Wagtail'. This does not make recognising true eastern or southern vagrants which do occur any easier. In fact, if you accept this view, to separate a real vagrant from a Channel look-alike is impossible!