- Motacilla flava
Identification
Length 15–16·5 cm (6-6½ in), weight 11–26 g
A wagtail with many plumage variations but all show uniform yellow breast and vent, most of the variation is to the head. A relatively short tail allows for differentiation of the grey headed varieties from the similar Grey Wagtail. Males are brighter than females, and juveniles duller still, often lacking any strong yellow tones.
Variation and Similar Species
The subspecies which have grey heads may look superficially like Grey Wagtails but they usually have greener or browner backs. The shorter tails and different calls of the Yellow Wagtail is always conclusive. Eastern Yellow Wagtail, formerly considered conspecific, is virtually indistinguishable with similar variation in head patterns; genetic tests are generally required for identification to be confirmed.
The main differences between the various races are described in the Taxonomy section. These differences are obvious in spring males, while autumn males, females, and juveniles can be very difficult or impossible to assign to subspecies. This Birdforum thread discusses the identification of females.
Distribution
Common and widespread summer visitor to the region in a variety of races. Breeds in Britain (but absent from most of Scotland), much of France and Iberia and east to central Siberia, and reaching north to the White Sea in Russia. Occurs south to the north Mediterranean coast, Balearics, Sardinia, Crete and Cyprus, throughout Turkey and at a few scattered sites in the Middle East such as Azraq in Jordan and the Hula Swamp in Israel. In north Africa, breeds from the Banc D'Arguin of Mauritania, through Morocco to Tunisia, and in the Nile Delta and Valley in Egypt. Has bred rarely in Ireland.
North African populations are resident or only partial migrants, but most birds migrate to winter south of the Sahara Desert in Africa, and/or east to India. Small numbers may also occur in winter in southern Spain. Present on breeding grounds April-May until August-October, rarely later.
Vagrants recorded north to Bear Island, Iceland and the Faroes and west to the Azores and Madeira.
Taxonomy
Eastern Yellow Wagtail from eastern Asia was formerly included in this species; genetic tests however show that western and eastern birds are respectively more closely to western and eastern populations of Citrine Wagtail than they are to each other.
Subspecies
About 10[1]-12 subspecies occur in the Region differing mainly in head patterns of breeding male. Some of these are considered full species by some authorities.
- M.f. flava (Blue-headed Wagtail)
- Breeds in mainland western and central Europe north to southern Sweden, migrates through north Africa and the Middle East. Scarce passage migrant in Britain. Blue-grey ear-coverts, crown and nape, and white supercilium, throat with narrow white malar line (sometimes whole throat white).
- M.f. flavissima (Yellow Wagtail)
- Breeds in Great Britain (north to southernmost Scotland), with a few pairs on the adjacent continent from northern France to the Netherlands, and have bred rarely in Ireland; migrates through northwest Africa. Yellow head with greenish tone to ear-coverts and crown. Note that M.f. flava and M.f. flavissima form a narrow hybrid zone in northern France. Birds from this zone vary in appearance, but one type, which resembles nominate M. f. flava except that the blue tones to the head are paler and more mauve and the white of the head is more extensive, particularly on the throat, ear-coverts, and supercilium; these are colloquially referred to as Channel Wagtail.
- M.f. cinereocapilla (Ashy-headed Wagtail)
- M.f. iberiae (Iberian Yellow Wagtail)
- Breeds Iberian Peninsula, southern France, and north-west Africa to Mauretania, migrates to western and north-central Africa. Grey crown darker than flava, narrow white supercilium, mainly or entirely behind eye.
- M.f. thunbergi (Grey-headed Wagtail)
- Breeds in central and northern Scandinavia and Russia to north-west Siberia, migrates through north Africa and Middle East to wintering grounds in sub-Saharan Africa. Dark grey crown, black ear-coverts, no supercilium, chin and throat yellow (occasionally white, and then easily misidentified as M.f. cinereocapilla).
- M.f. feldegg (Black-headed Wagtail)
- Breeds Balkans, Turkey and the Near East to Iran and Afghanistan (and possibly nearest parts of Russia), migrates through Algeria, Libya and Egypt, Arabia and Middle East to wintering grounds mainly in eastern Africa as well as migrating to southern Asia. Vagrant to Britain (<10 records). Crown and ear-coverts black, no supercilium, underparts entirely yellow. Sometimes considered to merit full species rank, with call notes also differing from M. f. flava. Eastern end of the distributions differ in having head black, olive back paler than feldegg, paler yellow below, chin white; were formerly recognized as subspecies melanogrisea.
- M.f. pygmaea (Egyptian Wagtail)
- Resident in Egypt along the river Nile. Small size, greenish-grey crown, blackish-green ear-coverts, white chin, dark blotches on breast-sides and little or no supercilium.
- M.f. lutea (Khirgiz Steppe Wagtail)
- Breeds in southern Russia from Lower Volga eastwards, migrates through Arabia and adjacent Middle East to Africa but also winters in India. Head yellow with olive ear-coverts, upperparts olive-green, entirely yellow below.
- M.f. beema (Sykes's Wagtail)
- Breeds in Russia north of lutea to southwest Siberia and Kazakhstan, migrates to India and to a lesser extent through Arabia and the Middle East to Africa. Ash-grey crown and ear-coverts, broad white supercilium.
- M.f. leucocephala (White-headed Wagtail)
- Breeds in Mongolia and nearest parts of China and Russia, winters probably in India but a rare visitor to the Middle East. Head white, ear-coverts very pale grey.
Subspecies melanogrisea is no longer recognized, seems to have been included within feldegg. A couple of other forms are sometimes given names that look similar to subspecies but without formal recognition as such. These include "M. f. dombrowski" and "M. f. superciliaris".
Habitat
Lowland grassland and wet meadows.
Behaviour
- On migration often seen in small mixed parties with Pied and White Wagtails
- Often seen feeding near cattle.
Flight
Markedly dipping flight. Walks and runs, constantly dipping tail.
Diet
The diet includes small insects, flies and beetles.
Breeding
They are inclined to breed in small colonies, nesting in tussocks, laying 4-8 speckled eggs.
Vocalisation
Gallery
Click on photo for larger image
M. f. flava - flavissima hybrid ("Channel Wagtail")
Photo © by IanF
Hurworth Burn Reservoir, County Durham, UK, April 2010
M. f. beema
Photo © by Alok Tewari
Okhla Bird Sanctuary, India, January 2013
Winter developing spring plumage, subspecies beema
Photo © by Shantilal Varu
Dabhla, Gujarat, India, 21 February 2020
References
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, S. M. Billerman, T. A. Fredericks, J. A. Gerbracht, D. Lepage, B. L. Sullivan, and C. L. Wood. 2021. The eBird/Clements checklist of Birds of the World: v2021. Downloaded from https://www.birds.cornell.edu/clementschecklist/download/
- Collins Pocket Guide to British Birds 1966
- Tyler, S. and D. A. Christie (2020). Western Yellow Wagtail (Motacilla flava), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.eaywag1.01
Recommended Citation
- BirdForum Opus contributors. (2024) Western Yellow Wagtail. In: BirdForum, the forum for wild birds and birding. Retrieved 10 October 2024 from https://www.birdforum.net/opus/Western_Yellow_Wagtail
External Links
GSearch checked for 2020 platform.1
