A History of North American Birds; Land Birds; Vol. 1 of 3

by Spencer Fullerton Baird; T. M. Brewer; Robert Ridgway

2. Turdus nævius, Gm. Cala., 21363.

3. Turdus migratorius, Linn., Penn., 1851.

4. Turdus iliacus, Linn., Europe.

In Massachusetts a few Robins remain throughout the year, but the greater proportion leave early in November, returning late in February or early in March.