Cuckoo?

Now I'm not sure if my ears are playing tricks on me, but I could have sworn I heard a cuckoo off in the distance this morning.  It sounded quite far away and it definitely wasn't the woodies or doves.  I heard it yesterday as well but as this is the second time now it's got me wondering.   

We do have alot of wetlands with reed beds near to where we live, according to the book I have it's a good place for them to be found so the possibility is there but is it too early yet?