Abstract Thursday - Motion

The Drop is the name of this light installation at the Uppsala Light Festival - see the clarification here.
I put the birds there thanks to the AT theme Motion - Ingeborg is hosting the theme, thanks! - Edit: I hade forgotten to tag the AT tag... it is there, now many days afterwards. :)

The three drops with changing colours can be seen in the extra blip which is edited just a little bit (took away all disturbing city lights in the background).