Hermit Thrush (Catharus guttatus) Science Article 6
Seasonal changes in food choice by migratory birds often reflect changes in relative food abundance and increased energetic demand. Hermit Thrushes (Catharus guttatus) in southeastern Louisiana are highly frugivorous during winter but forage exclusively onarthropods just prior to spring migration.
JENNIFER A. LONG AND PHILIP C. STOUFFER, The Auk 120(2):323-330, 2003