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This study was begun in 1990 to investigate the timing of migration and the abundance of the Greenland race Oenanthe oenanthe leucorrhoa. Both the nominate race O.o.oenanthe and the Greenland race O. o. leucorrhoa, occur on the Norfolk coast in both spring and autumn but this project concentrates on the spring passage.
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Photo Toni Asher
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Photo © John Webb |
To date (September 2000) over 1000 birds have been ringed. Additionally from spring 2000 until spring 2002 they have been colour ringed with combinations as follows: Left leg: 2 colours. Right leg: Metal ring over 2 colours. Colours used are red, yellow, lime green, white, blue, orange. Please report any sightings of these birds giving details of place (including grid ref or co-ordinates) and date to John Middleton.
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Results Some results so far indicate that birds on passage in March are predominately the nominate race O.o.oenanthe, Greenland race wheatears begin to arrive in mid April and then the ratio of Greenland:nominate is approximately 50:50. In May, Greenland wheatears predominate and outnumber the nominate race. The ultimate destinations of these Greenland race birds, whether it is Greenland or Iceland is not known as there have been no recoveries from the breeding grounds!These photos of Greenland race Wheatears were taken by Group member Trevor Girling |
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