Eurasian nuthatch
The Eurasian nuthatch calls frequently, usually with a loud, sharp "dwip" normally repeated twice, sometimes more often if excited. It has a shrill " sirrrr" or "tsi-si-si" alarm call, and a thin "tsit" pre-flight call. The song is a slow whistled "pee-pee-pee" with many variants, including a faster version, and may be intermingled with the call.