Tweets,

Made another visit yesterday to UW Bothell to observe the crow roosting
spectacle. After the last staging on the trees, lawns and buildings by the
south parking garage, the birds moved into the trees in the wetlands for
their final roost. They arrived at the campus about 4:40 pm and by 5:00
were already settled.

The river of crows that comes from Lake Washington is joined by an equally
large river of birds coming from the north, composing a final flock of well
over 10,000 birds. This video shows parts of the crow river and roosting:
http://www.youtube.com/watch?v=Ox9X-70VgV0. The morning egress from the
wetlands is not nearly so organized and spectacular, however.

Scott Ramos
Seattle