If you go to the forest early in the day, you will hear the sound of knick-knacks drilling holes in the trees here and there.
Japanese Pygmy Woodpecker,
The Japanese name is Kogera, a small woodpecker.
I can always find this woodpecker easily, because it has a characteristic squeaky voice.
![](https://image.jimcdn.com/app/cms/image/transf/none/path/s7d59bf9a6292c0ae/image/i3501db4b30942a9a/version/1648517901/image.jpg)