A thumb-size bat that was killed by a house cat in Russia flew a record-breaking 1,254 miles (2,018 kilometers) from the U.K. before meeting its untimely end.

The female Nathusius' pipistrelle (Pipistrellus nathusii), which weighed just under 0.3 ounces (8 grams), was found injured in the village of Molgino in western Russia. It was taken to a local bat sanctuary but later died from its injuries, which were most likely inflicted by a cat, according to a statement by the Bat Conservation Trust in the U.K. (BCT).

The ring on the bat's arm, which belonged to London Zoo, showed that it had previously been caught near Heathrow Airport in London by a volunteer bat recorder in 2016, according to the statement. Since then it has flown farther than any other bat from the U.K.

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"This is a remarkable journey and the longest one we know of any bat from Britain across Europe," Lisa Worledge, head of conservation services at BCT, said in the statement.

The migration is also the second-longest ever recorded for a bat. The record-holder is another Nathusius' pipistrelle that journeyed 1,381 miles (2,223 km) from Latvia to Spain in 2019, according to The Guardian.

"The movements of Nathusius' pipistrelles around the UK and between the UK and the continent remain largely mysterious," Worledge said in the statement. "This journey is an exciting scientific finding and another piece in the puzzle of bat migration."

Nathusius' pipistrelle reports are rare in the U.K., mainly due to historically poor recording by conservation groups. However, the National Nathusius' Pipistrelle Project, which was started in 2014 by BCT, has now recorded more than 2,600 Nathusius' pipistrelle bats in the U.K., including the individual recently killed in Russia.

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Conservationists with the pipistrelle project hope they can continue to shed light on these bats' population levels, migration routes and breeding success, as the species is suspected to be vulnerable to climate change, as well as onshore and offshore wind turbines, according to BCT.

Originally published on Live Science.