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

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.

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

PHOTOS, LETTERS, TWEETS, QUESTIONS – HAVE YOUR SAY

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

The marsh harrier, with its effortlessly slow and floating signature manoeuvre, is so enjoying its UK comeback that it now stays with us all year round