This has been bugging me all day now. I was brought up in the country and like to think I know most fairly common birds.
I was stood in a car park late last night chatting to two friends. Car park is fairly rural, near a small wooded area, there's also a canal and a large pond nearby for idea of habitat.
There was the oddest noise ever. I'm struggling to describe it. Nearest I can come to is that it sounded like a squeaky wheel. But noise was high up and travelling about. It was nearly 11pm and pitch black. There's a few lights in the car park but we couldn't see anything.
We were there over 5 mins and the noise didn't stop once, was constant. Then two birds came overhead. We got a brief look at them. They seemed pale, maybe grey in colour. But hard to tell in the light. They were about the size of wood pigeons and possibly a similar shape. But looked lighter.
The time of day has puzzled me. As well as the odd noise. Sensible birds should be roosting. Definetely not owls and I really don't think they were any other bird of prey.