Sc0tty
Well-known member
Is it not the case that the ring combination is the same for ALL birds in the same scheme - the numbers are different?
I don't think so. Here's the reply I received -
"Many thanks for your sightings of colour-ringed Avocet (Yellow over Blue left / Yellow over Red right) at Potteric Carr on 01/05/2017. Unfortunately we cannot say for certain where this bird was ringed because two Avocets have been fitted with the same colour-ring combination. Firstly we ringed one as a chick at Orfordness, Suffolk in 2014 and then in error an Avocet chick was fitted with the same colour-combination at Rutland Water in 2015."