You’re probably used to seeing a similar suite of species in your garden each year, but have you ever wondered how old the bird you’re looking at might be?
How long have you been living in that house, and how many generations of Blackbirds or Goldfinches might you have been watching over the years? What about the confiding Robin that watches you put food on the bird table every morning, is that the same bird as last year? What about 3 years ago? 5 years ago? More? Thankfully, decades of research in Ireland, the UK, and further afield means we can answer those questions!
See https://birdwatchireland.ie/irish-garden-birds-2020-how-long-do-your-garden-birds-live/ for more information on this topic.