Study Site (image) University of Washington Share Print E-Mail Caption The study site on the roof of UW Bothell's science building has audio recorders placed at four corners of a 10-foot square. The birds get used to the equipment and then can be observed when they gather as usual at dusk. Credit University of Washington Usage Restrictions With credit Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.