The puzzle is in two parts. In part 1, you need to identify the
species of 9 birds from their sounds. The bird sounds are given in
the table below (click on the links Bird A, Bird B etc.)
In part 2, you need to identify the 9 species of bird from their
pictures, and match them with the sounds you identified in part
1.
You should then have a link between the letters (sounds) and
the numbers (pictures)
The final cache is at N53.36.(B-E) (H-J) (D+F) W002
37.(C+D) (G-H) (A)
The 9 species are somewhere amongst this list:
Barn owl, Bittern, Buzzard,
Coot, Cormorant, Corncrake, Curlew, Gannet, Grey Heron,
Jackdaw, Kestrel, Lapwing, Merlin, Nightjar, Oystercatcher,
Pheasant, Puffin, Rook, Starling,
Woodpigeon
It may help if you fill in the table below as you identify the
birds: