The oldest Oystercatchers have been discovered in the Wash in East England! 2 birds were found within 1 month of each other earlier this year; the first had been ringed in 1983 as a chick, while the second was ringed in 1982 as an adult - so it's at least 46 years old (!) and potentially even older. Amazing!
https://www.rspb.org.uk/whats-happening/news/oldest-oystercatcher-discovered