First mom came to check on things.

Then she did some feeding.

Then dad came and did some feeding too, while mom looked on.
I like to see their tails fan out to support them. They remind one of shrimp.

The male sparrows were busy guarding their property this afternoon in the Tiergarten. The women were either gathering food or busy inside the houses. Look closely, you might see one below.
The birdhouses and the trees are all numbered here, this being Germany. You could probably send a postcard to this sparrow: “Herrn Spatz von Sperlingdorf, Hausnr. 76, Baum 144-15, Großer Weg, Tiergarten, 10557 Berlin”