The parcel had been sent by a member of the public and in it was a leg & foot of a bird. As you can see above, the leg has a blue darvic ring - LLB, but according to the letter no metal ring was found. The finder is wanting to know where & when the bird was ringed. Well - I don't even know what species this will have come from. So any suggestions please leave a comment below. In the meantime I'll make some enquires!
! UPDATE !
Thanks to Lee Barber at the BTO for helping to unravel this mystery. The above ring & foot belonged to a Shag ringed on the Isle of May as a chick in 2009. Found dead on 28/02/2010 at Boulmer in Northumberland.