Rare Iberian chiffchaff draws birdwatchers to Finland’s Uusikaupunki

A rare Iberian chiffchaff, previously recorded in Finland only once, has been spotted in Uusikaupunki, attracting hundreds of birdwatchers from across the country, reports Yle.

The bird, native to the Iberian Peninsula, was discovered last Saturday in the Liesluoto area of Uusikaupunki’s archipelago by Samuel Piha, a birdwatching enthusiast from Turku. Piha described the find as “a dream for any hobbyist,” noting that the bird’s distinctive song immediately caught his attention.

“I’ve got decent skills in identifying species, but this one left me blank,” Piha told Yle. After recording the bird’s call and consulting experts, he suspected it might be the extremely rare Iberian chiffchaff—a theory later supported by the Finnish Rarities Committee, which oversees documentation of uncommon bird sightings in Finland.

The bird was captured, ringed, and had a DNA sample taken on Sunday to confirm its species. While its song and physical traits strongly suggest it is an Iberian chiffchaff, Hannu Huhtinen, a committee member, cautioned that hybridisation with other warblers cannot yet be ruled out. Genetic analysis will provide the final confirmation.

Experts believe the bird likely strayed off course during spring migration, carried north by shifting wind patterns. “We had strong northern winds for a while, but last week, they turned southerly, which may have brought other rare species here as well,” Huhtinen explained. Another unusual sighting—an eagle owl—was reported in Ilomantsi the same weekend, further supporting the theory of wind-assisted detours.

Birdwatchers have travelled from as far as Oulu, Kajaani, and Joensuu to observe the chiffchaff, which has remained in the same area for nearly a week. Sami Tuomela of the Finnish Twitchers’ Association noted that Finland records a completely new bird species roughly once a year, on average.

While the chiffchaff could stay in Finland, Huhtinen said the chances of it breeding with its own species are slim. The last confirmed Iberian chiffchaff in Finland, spotted 15 years ago, disappeared after ringing and was presumed dead.

For Piha, the discovery fulfils a childhood dream and contributes valuable data to ornithology. Despite occasional criticism of birdwatchers disturbing rare species, he emphasised the hobby’s role in scientific research. “I’d encourage everyone to grab a pair of binoculars, look up, and listen—you never know what you might find.”