Check out this on-going research project looking at partial migration among American dippers on the Olympic Peninsula.
Data suggest that migration patterns may be related to the presence of salmon.
11 January: Why would dippers migrate?
Copyright © 2010-2017
Migratory Connectivity Project, Smithsonian Migratory Bird Center. All rights reserved.
Migratory Connectivity Project, Smithsonian Migratory Bird Center. All rights reserved.