Whistling bird???

Hi everyone,

the last few days I have a bird in the shrubs behind my garden that whistles...... Early morning (4.00) and at dawn, long +loud +even, no "runs" in the melody... I have tried to identify it through listening to various online birdsongs but no success so far . Any suggestions? I have no clue what it looks like as the shrubs are so dense and only have heared it .

But it is really loud- can hear it through closed windows while watching telly  in the evening or get woken up by it in the morning...nice though;-))

 

 

 

Sunny ;-)