Birds and silhouette

YES!!! i have been waiting for the perfect time to take this picture.
Every so often i pass by these wires at the right time and notice these bird.
they cover all of the wires, creating lumps on the thin wire.
They sing as a whole, filling the air with bouncing, high-pitched but pleasant music.
its really peaceful.
BUT it only happens during a certain hour!
and i got it! :)