Wooden bird call

I make two wooden bird calls.

When I am making,

these performance is half in doubt.

These wood is as hard as iron,

'Sansuyu(Cornus officinalis)' tree wood.

I add some coarse kolrosing on these.

With two bird calls that I made before.

Not prepare rosin, instead billiards' chalk.

I have experience with these

that Great Tits gathered around me,

and I could look near Varied Tits' copulation.