Song Meter automated recording devices were placed on Amatignak, Buldir, Kiska and Nizki-Alaid Islands in the western Aleutian Islands, Alaska, USA during June-August 2009 and set to record at night to monitor nocturnal seabirds.
Other bird calls and songs were recorded, many brief and challenging to identify.
We are requesting assistance from experts in bird sound identification, to help us to identify the more challenging examples.
A selection of calls is on the web.
Please listen to these and tell us what you think about a call or calls, if you are sure or nearly sure of your identification.