THE IMPORTANCE OF FRUIT TO SWAINSON’S THRUSHES, CATHARUS USTULATUS, DURING FALL MIGRATION: A FIELD TEST OF PLASMA METABOLITE ANALYSIS

I evaluated the hypothesis that fruit availability significantly influences stopoverhabitat quality for fall migrating Swainson’s Thrushes (Catharus ustulatus) in coastalnorthern California. I analyzed plasma metabolites (triglycerides,