10th July Common Tern Raft Visit
Last visit today with one more Common Tern Colour Ringed.
First Common Terns colour ringed today
Common Tern rafts were visited today and our first colour ringing of this species was undertaken with 9 birds ringed with six of them colour ringed.
The Southern Colour Ringing Group rings Common Tern pulli (young in the nest) nesting on rafts at Fishers Green in the Lee Valley Regional Park.
In addition to a conventional BTO metal ring, we also fit colour rings (yellow with a black code starting with 'C') which allows the birds to be relocated without needing to be recaptured. There are many more bird-watchers looking for colour-ringed birds, so this greatly improves our chances of understanding the movements of the birds from the breeding sites.