Through the Changing Arctic Ecosystems initiative, the U.S. Geological Survey (USGS) strives to inform key resource management decisions for Arctic Alaska by providing scientific information on current and future ecosystem response to a warming climate. Our research is (1) examining critical physical and landscape-scale changes in the environment; (2) assessing key ecological drivers of population change; and (3) projecting future abundance and distribution of focal species, including mammals, birds, fish, and aquatic invertebrates that use the landscapes of the Arctic in different ways and likely will express differently the consequences of changes to the associated ecosystems. USGS Alaska Science Center (ASC), monitors bird populations in several sites and these are the results of those studies.