What the Birds Say About the Ice (George Divoky)

Video Shot in: 2022

Dr. George Divoky explains that he uses geolocators to track bird movements, specifically how they migrate north after breeding and occupy the Bering Sea. He mentions a significant ice reduction in 2017, which led to birds wintering for the first time in the Chukchi Sea. This shift in wintering distribution and the availability of fish in the Bering Sea had an impact on bird survival. Dr. Divoky notes that annual adult survival rates remained stable, but breeding success was affected, resulting in fewer pairs laying and incubating eggs. Experienced birds had better reproductive outcomes, indicating a potential selective process. The changes in wintering grounds present challenges for bird adaptation.