A Manx Shearwater ringed as an adult (at least 5 years old), breeding on Copeland Island, Northern Ireland, is currently (2003/2004) the oldest known wild bird in the world: ringed in July 1953, it was retrapped in July 2003, at least '''55 years''' old. Other ringing recoveries have shown that Manx Shearwaters migrate over 10,000 km to waters off southern Brazil and Argentina in winter, so this bird has covered a ''minimum'' of 1,000,000 km on migration alone (not counting day-to-day fishing trips). Another bird nearly as old, breeding on Bardsey Island off Wales was calculated by ornithologist Chris Mead to have flown over 8 million km (5 million miles) during its life (and this bird was still alive in 2003, having outlived Chris Mead). [[File:Manx_Shearwater.JPG|thumb|250px|left|Manx Shearwater]]
