An American Robin (Turdus migratorius) sings an overture of Spring vocalizations in this mid-March, 1998 recording. Just about every voice and call a Robin can make, he makes in this sample. The session lasted over 20 minutes, so I've compressed this to demonstrate all the different sounds he uses.
Douglas Von Gausig (recordist; copyright holder), Naturesongs.com
This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported License.