DANCE.
wintering starlings in Berlin S-Bahn station Alexanderplatz, imitating train's 'doors closing' triad
from https://www.tagesspiegel.de/images/im-bahnhof-alexanderplatz-uberwintern-viele-stare/alternates/BASE_21_9_W1000/im-bahnhof-alexanderplatz-ueberwintern-viele-stare.jpeg