Could you please help me to identify this bird? Near the place I live (Budapest suburbs, a forest starts just next to my house) I noticed a very strange bird voice. I first heard it about 2 years ago. I never managed to see the bird, unfortunately. But I recorded the sound when the bird was not so far from me. (Usually I hear the sound from a distance, maybe the bird doesn't like to go close.)
I am sure it is not a caged bird because I already heard this sound from every direction.
This sound is similar to a baby crying - maybe this bird learnt it after hearing it from a baby??
Here is the recording: