As we published on this website on September 23, on our trip to Sardinia, a team of Italian ornithologists trapped a Gull-billed Tern (Gelochelidon nilotica) that had a Spanish ring that Gustavo A. Ballesteros had been ringed 10 years before in the salinas of San Pedro del Pinatar.
The news has been published in newsletter nº 35 (November, 2019) of ‘Migratory Birds for People’.
You can download it here: