Conversation

For the last several years. a song thrush near us at this time of the year has put down the same riff, a very recognisable, whistle-able tune. I filmed and posted this last year, though I can't find the clip at the mo.
This year, a song thrush near us has a completely different tune. But when I took the bird food out this morning, happily I heard that familiar riff coming from the other side of the burn.
I don't know if they have the same tunes, or if they learn their songbooks
#Birds