For the very first time, a few weeks ago, licenced ringers put special “flags” on over one hundred Sandwich tern chicks. By 15 July, the oldest were already leaving their nesting sites: one was soon spotted at Rhos Point, Colwyn Bay and, the following day, five more were seen at Formby in Lancashire.
Ringing the changes
Sandwich tern flying with eel to nest - Bertie Gregory 2020VISION
Over at Cemlyn, with July nearly gone, the young terns are starting their migration – and this year we can begin to follow them!

Sandwich tern ringing © Phil Woollen (Taken under licence issued by Natural Resources Wales)
This year’s wardens – Mark, Ruth and Matilda – estimate that over 1,000 pairs of Sandwich terns have bred. It is difficult to be very accurate when estimating how many chicks have fledged but careful observations indicate a figure in the region of 800; with predation not appearing to have been a significant issue. Cemlyn remains the only Sandwich tern colony in Wales, and one of the most important in the UK.