Shrieking in the woods
There are all sorts of things that shriek in our woods and the Eurasian Jay (Garrulus glandarius) is just one of them.
Jay (Garrulus glandarius) audio by Bodo Sonnenburg ( CC -BY-SA) xeno-canto.org
Magpie (Pica pica)
audio by Jorge Leitão (CC-BY-SA) xeno-canto.org
Grey squirrel (Sciurus carolinensis)
audio by Marc Baldwin (www.wildlifeonline.me.uk)
Vixen (Vulpes vulpes)
audio from (angelfire.com)
Green woodpecker (Picus viridis)
audio by W. Agster (CC BY-NC-SA 4.0) xeno-canto.org
Barn owl (Tyto alba)
Audio by Franz Lindinger (CC BY-NC-SA 4.0) xeno-canto.org
Southwick Country Park Nature Reserve 
When I first heard a squirrel ‘shrieking’ I had no idea what could be making such a noise. It came as quite a surprise to find it was just a squirrel!
Yes! I actually had to go out with my binoculars and watch squirrels shrieking at me before I could convince myself it wasn’t some strange new bird.