Help

Hi guys. I'm after some help.

I moved house about 5 months ago now and each night my children and i are woken up by the strangest noise that we can only assume is a bird of some sort.

It is a very high pitched distinctive noise that sounds like a monkey or a witch laughing! Its very strange and we would live to know what kind of bird it is, if its a bird at all... We are very intreged. 

I have managed to record the sound for longer than i was able to last time i tried. You can hear birds in the background but you'll know which i mean 

Can you help? 

3010.Voice 002.m4a