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)

Wednesday, 25 February 2009

Knot Migrations

A large number of recent Knot recoveries and colour ring sightings prompted me to review what local ringing by the Morecambe Bay Wader Group has discovered about this abundant winter visitor to Morecambe Bay.

1) Breeding Area The 16 recoveries within the Greenland breeding area during May to July show this to be the main destination of our birds. Most of the recoveries are on the west of Greenland ( the side nearest to Canada). We also have two recoveries in June on Ellesmere Island Canada both were caught on the nest then
released. The distance between Morecambe Bay and Ellesmere Island is 3400 km.

2) Spring Migration Birds start to leave the Bay in late March on through April. They obviously use Iceland as a re-fueling halt for we have 26 recoveries in May and 1 in late April. Almost all of these were caught and released. We also have 10 reports from northern Norway at this time of year. So this area is also used as a stop over point. All these birds were either caught and released by ringers or were sightings of colour ringed birds. The only other reports we have at this time of year are one each in Germany and The Netherlands.

3) Autumn Migration On the return migration in July through to early September they also make use of both Iceland (18 recoveries) and Norway ( 4 recoveries) as re-fueling halts but most move to the Wadenzee in the Netherlands ( 24 recoveries) or The Wash(48 recoveries) where they under go the annual moult during September and October before they make a gradual return to Morecambe Bay most arriving in late November through to early January.

So Knot make this amazing circular migration of around 7000 km. from the Bay to the breeding grounds and back.

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