thread drift: Speaking of shearwaters, a Manx shearwater was recently recaptured at a breeding colony in Britain. That individual was first caught and banded in 1957. At that time it was believed to be about 5 years old. So it is now about 50 and still trying to breed. Based on typical habits and migration patterns of the species, it was estimated it could have flown 5 million km (or miles, I forget which units were used) in its lifetime