Eastern Yellow Wagtail (Motacilla tschutschensis)

2020 ◽  
Author(s):  
Alexander V. Badyaev ◽  
Brina Kessel ◽  
Daniel D. Gibson ◽  
Josep del Hoyo ◽  
Nigel Collar
Keyword(s):  
Yellow Wagtail

Eastern Yellow Wagtail (Motacilla tschutschensis)

1998 ◽  
Author(s):  
Alexander V. Badyaev ◽  
Brina Kessel ◽  
Daniel D. Gibson
Keyword(s):  
Yellow Wagtail

On the processes of sympatric speciation in the group of «yellow» wagtails in the Middle Volga region

2021 ◽  
pp. 105-111
Author(s):  
Elena Artemieva
Keyword(s):  
Genetic Divergence ◽  
Sympatric Speciation ◽  
Genetic Distances ◽  
Middle Volga Region ◽  
Intraspecific Hybridization ◽  
Yellow Wagtail ◽  
Leading Role ◽  
European Part Of Russia ◽  
Genetic Mechanisms ◽  
Spatio Temporal

This article discusses the mechanisms of sympatric speciation in the group of species of «yellow» wagtails based on hybridization. Interspecific and intraspecific hybridization can be attributed to the genetic mechanisms of divergence of populations of «yellow» wagtails. The existence of hybridization between the subspecies of the white-eared yellow wagtail M. flava beema and the yellow-fronted wagtail M. lutea leads to the emergence and further accumulation in the population of individuals with a light-colored head to varying degrees, the so-called «gray-headed» individuals. Intraspecific hybridization of subspecies forms of the yellow wagtail M. flava — nominative M. f. flava and white-eared M. f. beema leads to constantly occurring genotypic splits, which support intraspecific polymorphism of populations and provide the basis for further genetic divergence of these subspecies and species. The form of "gray-headed" hybrids is characterized by maximum genetic distances (1306.67–1375.67), which may correspond to the species rank. The modern polytypic complex of M. flava (in the narrow sense, a series of species and subspecies of only M. flava) probably formed in historical time on the basis of fan hybridization between the original forms of M. f. flava and M. lutea. Thus, the factors of genetic differentiation and divergence, along with ecological and geographical isolation, play a leading role in the formation of the spatio-temporal and genetic structure of the genus Motacilla. Currently, there is an active process of genetic divergence and separation of subspecies and species forms of «yellow» wagtails under conditions of wide sympatry within a single polytypic complex based on intraspecific and interspecific hybridization in the European part of Russia.

scholarly journals Evolution of the breeding range of the Black-headed Yellow Wagtail (Motacilla flava feldegg)

2016 ◽  
Vol 86 (1) ◽  
pp. 3
Author(s):  
Flavio Ferlini
Keyword(s):  
Twentieth Century ◽  
Distribution Range ◽  
Aral Sea ◽  
Late Nineteenth Century ◽  
Limiting Factor ◽  
Natural Environments ◽  
Migration Route ◽  
Yellow Wagtail ◽  
The Balkans ◽  
Breeding Range

The Black-headed Yellow Wagtail (<em>Motacilla flava feldegg</em>) has shown a clear tendency to expand its breeding range in the period 1830-2015, with an accentuation of the phenomenon during the second half of the twentieth century. Expansion northwards has been favoured by climate change and is characterized by alternating phases of jump dispersal and subsequent diffusion within the limits thus achieved. In the Balkans and in western Europe, jump dispersal occurred mainly in the late nineteenth century and mid-twentieth century, allowing the subspecies to reach the 48th parallel north. In the eastern portion of its breeding range, however, jump dispersal mainly took place in the last decades of the twentieth century and in the early part of the twenty-first century. In Europe (especially in the oriental sector) and in Asia, the northern edge of the range is defined with good approximation by the 20°C isothermal of July. In Europe, there has been a shift in its distribution range to the west and the establishment of a new, progressively more import migration route leading the subspecies from Africa to Europe across the Strait of Gibraltar. Concurrently, more and more sightings of the Black-headed Yellow Wagtail have been reported in northern European countries. In the Middle East, expansion to the southwest in Syria, Israel, Lebanon and Jordan has diffusive characteristics and exploits almost exclusively natural environments. In contrast, nesting in the southernmost parts of the Arabian Peninsula is determined by human activity, in particular by the irrigation of fields for the production of fodder, demonstrating the potential of the subspecies to expand further south. In this case, the limiting factor is certainly the lack of a suitable environment, due to the strong prevalence of a hyperarid climate. In central Asia, especially in the catchment area of the Aral Sea, the spread of <em>feldegg</em> has been favoured by the irrigation of the land for agricultural purposes. In the far eastern edge of its distribution range, no particular expansive or recessive movements have been observed.

scholarly journals The first record of Sykes’s Yellow Wagtail, Motacilla flava beema from Japan

2015 ◽  
Vol 64 (2) ◽  
pp. 271-274
Author(s):  
Hiroshi IKENAGA ◽  
Shusuke YANAGISAWA
Keyword(s):  
First Record ◽  
Yellow Wagtail

scholarly journals The autumn moult of the yellow wagtail

1979 ◽  
Vol 2 (3) ◽  
pp. 113-117 ◽  
Author(s):  
Anthony C. Hereward
Keyword(s):  
Yellow Wagtail

scholarly journals Mixed haemosporidian infections are associated with higher fearfulness in Yellow Wagtail (Motacilla flava)

2017 ◽  
Vol 95 (6) ◽  
pp. 405-410 ◽  
Author(s):  
M.P. Marinov ◽  
C. Marchetti ◽  
D. Dimitrov ◽  
M. Ilieva ◽  
P. Zehtindjiev
Keyword(s):  
Mixed Infection ◽  
Parasite Species ◽  
Single Species ◽  
Blood Parasite ◽  
Activity Level ◽  
Single Infection ◽  
Novel Object ◽  
Yellow Wagtail ◽  
Parasite Infections ◽  
Single Genus

Blood parasite infections have been shown to influence behavioural traits of their avian hosts, in particular activity level and boldness. Following the hypothesis that a mixed infection by different parasite species should have higher effects than single-species infections, we analysed activity and boldness in wild-caught Yellow Wagtails (Motacilla flava L., 1758), a trans-Saharan migrant, during the energetically demanding spring migration. Eighty-five percent of the birds were naturally infected with Haemoproteus Kruse, 1890 or Plasmodium Marchiafava and Celli, 1885 (Sporozoa, Haemosporida) and 27% of individuals had parasites from both genera. No differences in activity were found among uninfected, single infection, and mixed infection groups. Birds with infections from both genera appeared to be more fearful when first introduced to a cage. These birds also tended to be less likely to approach a novel object compared with uninfected birds and birds infected by a single genus only.

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