On a recent wintering shorebird survey, SCCF biologists were excited to re-sight a royal tern (Thalasseus maximus) that was banded back in 2001.

“The average age for these birds is around 10 years, making this 24-year-old an unusual find,” said SCCF Shorebird Technician Samantha Hinsz, who spotted the tern.

This individual bird was banded by Dr. John Weske, who has been banding royal terns and brown pelicans (Pelecanus occidentalis) along the U.S. Atlantic Coast since 1974.

“Weske’s long-term banding data is rare, and has helped scientists monitor population trends of the species,” Hinsz said. “The two oldest royal terns ever re-sighted, both 31 years old, were banded as part of Dr. Weske’s efforts.”

On Sanibel, SCCF staff have been reporting terns from Weske’s project since the 1970s!

“By reporting banded bird sightings, researchers can get information on individual birds’ longevity and migration routes, which can help inform management and conservation action,” Hinsz said.

Royal terns are a migratory seabird that can typically be found on Sanibel year-round, though mature adults spend their summers in northern breeding grounds along the Atlantic coast.

These birds spend the first three to four years of their life on their wintering grounds before returning to nesting sites.

Royal terns can be identified by their black crest, which is solid when in breeding plumage, and bright orange bill.