NLRG was formed in 1957 to help in the study of birds in the Lancaster and District Birdwatching Society area. There are currently 12 active ringers. Species currently being studied include: Pied Flycatcher, Bearded Tit, Sand Martin, Twite, Goosander, Oystercatcher and Grey Wagtail. Migration has been studied for 28 years at Heysham. We welcome anyone who wants to observe, help or perhaps wish to become a ringer. Photo: A Heysham-ringed Twite on the Mull of Kintyre (thanks to Eddie Maguire)

Saturday 11 August 2018

Quick Movers

  Two controls received today,  both at Icklesham in East Sussex on the south coast are good examples of the  quick movement of our summer visitors at this time of year. - A Sedge Warbler on July 31st just six days after ringing and a Sand Martin on August 6th 12 days after ringing both were juveniles and involved movement of 425 kms. They set me looking back at our data set for these two well ringed species.

The latest control brings the total of our Sedge Warblers controlled along the south coast to 88, 36 of them in Sussex. Of these 19 have been under 10 days after ringing and a further 11 within 20 days. The shortest was just two days after ringing. Further afield we have had 53 controls from Western France of these two were under 10 days and four within 20 days,  the quickest was six days after ringing.

The Sand Martin  in Sussex is the 141st ringed by the group to be controlled there! We have 58 reports from Western France, 16 in Spain and six in Senegal in West Africa. There are fewer quick movers than Sedge Warblers mainly I feel because almost all Sand Martin ringing is at the breeding colony and most birds are recently fledged youngsters. However we have 2 under 10 days and 10 under 20 days. Of French controls we have one 10 days after ringing and another 17 days.

No comments: