Late at night on the Sharpham Estate these shrill shrieks are heard between the dark and menacing trees:
-Click play after following the link.
By recording these calls and comparing to a pre-recorded archive it was determined as the call of the adult female Tawny Owl. If you listen to this noisy recording very carefully you can just about here another female, and the classic ‘t-wit t-woo’ of the male i nthe background .
Check out the Wikipedia article on Tawny Owls for some further reading: