23 June 2011

A Sedge Warbler Season

To understand our summer migrant birds, we really need to know their complete annual movements. With little ringing done in Africa, our Out of Africa appeal is really starting to 'bear fruit'. Our Norfolk Cuckoos are also looking like they are slowly moving south for the winter. Click here to see their current movements.

The demography team here at the BTO have recently processed reports of British ringed birds being caught at the National Park of Diawling in Mauritania. We have had very few Sedge Warbler recoveries from here but 100% of these have been by visiting ringers, mainly from the French Ringing Scheme. Two British ringed Sedge Warblers were caught in 2003, four in the winter of 2008/2009 and 17 for the winter of 2010/2011!

One Sedge Warbler, X396923 was ringed at Christchurch Harbour Ringing Station, Dorset on 9 Aug 2010. This bird was then caught 10 days later at Icklesham, Sussex (173km) after putting on a little weight. This same bird was then caught at the National Park of Diawling, Mauritania on 18 Dec 2010 (4035km)!

View Sedge Warbler X396923 in a larger map

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