This month’s challenge is all about the identification of long-legged birds

It’s the largest member of its worldwide family, but has it ever reached the UK, asks David Lindo

Birds of prey in flight have a reputation for being very tough to identify. However, follow these guidelines and you have a good chance of telling these five larger species apart. Note photos are not to scale.

PHOTOS, LETTERS, TWEETS, QUESTIONS – HAVE YOUR SAY

The white-tailed eagle, the UK’s largest bird of prey, was brought back from extinction – and it all started with an ambitious project on a mountainous Scottish island, half a century ago...

Check your answers against our explanations. Remember, there are no ‘trick’ birds or extreme rarities among these...