Date: March 22, 2018
Source: The University of Montana
A recent study from researchers at the University of Montana, National Audubon Society, Oregon State University and East Cascades Audubon Society shows food sources for migratory birds decline with low water levels and high salt content in lakes.
The study is based on data gathered for more than 25 years at Lake Abert in Oregon, one of the most important stops for migrating waterbirds in the western United States. It found that as surface water levels decline, salinity increases and affects the availability of brine shrimp and other invertebrates -- a key food source for waterbirds.