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Résumé :
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Regular spring passage of Citrine Wagtails is reported for the Romanian Black Sea coast in 1993 to 1996. A maximum of about 100 individuals was seen in April 1996. The median passage date for 1993-1996 was 10 April. These observations may reflect the establishment of a new migration route related to the westward expansion of the breeding range and the apparent establishment of new winter quarters in the Middle East and North-east Africa. Both European subspecies, citreola from the north of Russia and werae from the plains of southern Russia and adjacent territories, have expanded their breeding ranges westwards since the first half of this century. The species recently reached Finland, the Baltic States and Poland and has established an increasing breeding population of an estimated 1000 pairs in Ukraine. Ever increasing observations in Romania, Cyprus, western Turkey, Greece and Hungary suggest that a new flyway is being established west of the Black Sea. The majority of observations was made in spring, especially in Romania where the species has almost solely been recorded in April. The lack of autumn records may be due to identification problems with juvenile or first winter birds, or it may indicate different migration routes in autumn. Individuals photographed in Romania in spring showed characteristics of the nominate subspecies, while werae may also be expected in view of its expansion into central Europe, its population increase in Ukraine and the tendency to winter in Israel.
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