I've increased the volume and cleaned up the hiss a bit (hope that's okay OP) so hopefully members might hear something they didn't hear the first time.
So after listening again - and through headphones - I 'think' there are possibly 2 individuals as at times the calls seem to overlap each other.
I also 'think' I can hear a hoot and some barking as well as definite screams, which brings me back to owls and foxes I'm afraid.
Obviously, that's just me, but sometimes the most common answer (owls/ foxes) is the answer.
But that's just my opinion and I welcome other members offering theirs.
Click here to play this audio clip
In reply to Dave - CH:
Weird noise 3.m4a
So I went back this evening, and I heard it again! Almost exactly the same time.
Unfortunately I only heard it once, so didn't have any luck trying to get closer to the source. So I'm not sure if this recording is any better. You can hear my footsteps as I try and get closer and the chiffchaffs didn't co-operate. But here it is, just in case anyone hears anything familiar in this one.
Here's an edit of this latest recording -
Hmmm - still very odd, but I'm starting to think it could possibly be an audible bird scarer.
Bird scarers use distress calls or raptor calls to deter certain birds and they can be played at regular times - you say 'almost exactly the same time' - although many also play sounds randomly.
Because this seems to play at a certain time then it could possibly be an audible device that is preventing roosting - hence the time of evening.
In reply to rspbailey:
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