We had an excellent day on St Georges Island last Saturday [25/06/2011] ringing 83 Great Black-back chicks with BTO rings and 69 with colour rings. The colour rings are taller than the BTO ones and the tarsus was not long enough on some of the younger chicks to take a colour ring. We hope to go out again in a couple of weeks to fit colour rings to these birds. Thanks to the two teams, Mark G, Mark W, Peter, […]