Yellow-bellied flycatcher (IMAGE) University of Oldenburg Caption The Yellow-bellied flycatcher (Empidonax flaviventris) is a small insectivore of the tyrant flycatcher family that cannot produce the protein cryptochrome 4. The birds breed in North America and migrate to southern Mexico and Central America in winter. Credit Corinna Langebrake Usage Restrictions Use only in connection with press releease and with appropriate credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.