Avocets

Combination of a red coded (2 white alpha-numeric) 10mm. high ring (on the tibia of both legs) and metal ring (on right tarsus).

note 1 : the 2 white characters are 1 alpha followed by 1 numeric, e.g. A5, C2, E9.

note 2 : the characters on left and right legs are identical, and unique to that bird.

note 3 : ring codes are read from the bottom up.

note 4 : these rings have been applied to juveniles reared at a new colony (started in 2007) near Ely, Cambridgeshire. Rings are readable through a good telescope at distances of up to 100m.