Methods
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.
If you see a bird with one of our colour rings, please use the submission form or send details (ring-code, date, location, species) to This email address is being protected from spambots. You need JavaScript enabled to view it..