blackbird on birdflat

For a while I was wondering what was happening on the birdflat,
where the blackbird had build a second nest. (see post 6 june)
I saw her breeding... I saw her sitting on the nest .. I had seen her feeding now and then, so thats sign of life up there.
but it seemed so quiet up.
But today I saw two beaks up...of young blackbirds.