Testing the influence of willow proximity on feeding rate in a keystone species : the Red-naped sapsucker.
Abstract
Woodpeckers are considered ecosystem engineers because they excavate nest cavities that eventually provide habitat for other cavity-nesting species. This study casts doubt on the importance of willows to sapsucker nest site choice.
Subject
Red-naped sapsucker.
Woodpeckers--Food.
Woodpeckers--Habitat.
Woodpeckers--Nests.
Forest ecology.
Willows.
Posters.