Social Networking?

There is a tree across from Purity Market where sparrows spend the night.  You can see a few of the branches in the upper right of this photo.  During the day the birds are out and about but come evening they return to this tree.

I walked over there in the late afternoon a few days ago to see if I could make a recording of their chatter.  I watched as groups of tens and twenties flew into the tree top and disappeared but for some reason they were keeping quiet.

This morning I walked by in the near dark and they were singing up a storm!

Here they are. 

Amazing!

As a bonus, you can hear the foghorn at the entrance to Noyo Harbor towards the end of the recording.