The spring passage of Black-tailed Godwit is well underway with counts of up to 1750 on the Allen Pool at Leighton Moss RSPB Reserve. Careful scoping of the flock has revealed up to 8 different colour ringed birds to date.
Our population in winter usually numbers around the 5-600 mark but in spring numbers have peaked 3000 with up to 2000 on autumn passage. The colour ringing shows that birds occurring on passage in our area winter further south with good numbers on the Dee and the Solent and down into France and Portugal. Some birds appear to use the same migration route in successive years with the largest numbers using the west coast route to Iceland. Others though vary in their migration routes as shown by many reports from The Wash and The Netherlands.
These results certainly show the value of colour ringing in studying the movements of such mobile species. We look forward to finding