Why do some Black-tailed Godwits wear colour-rings?


The birdwatchers at Cley provide daily observations of the colour-ringed Black-tailed Godwits that turn up on the site, revealing some fascinating stories and contributing massively to migration research.

This blog was originally written for the Norfolk Wildlife Trust’s magazine, Tern.

Flock of Black-tailed Godwits at Cley: Pat Wileman Flock of Black-tailed Godwits at Cley: Pat Wileman

No two visits to Cley are the same; the birds change with the seasons and even from day to day.  If there are 200 Black-tailed Godwits in front of Daukes hide on Tuesday and only 100 on Thursday does that mean that half have moved on – or did all of the earlier birds leave, to be replaced by a new selection?  The fact that several individuals wear colour-rings enables regular godwit observers, such as David and Pat Wileman and Mark Golley, to help provide some answers.

The highest Cley counts of Black-tailed Godwits now occur in the autumn, when birds can be…

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