Reference citation:
Beal, F. E. L. 1915. Food of the robins and bluebirds of the United States. Bulletin of the U.S. Department of Agriculture 171:1-31.

Source citation:
Allen Hurlbert. 2017. Avian Diet Database.

Source archive URL:
https://github.com/HongyuLii/dietdatabase/archive/9b2c68014a3075f75a2e10755ea6cb483bc23a14.zip

Reference citation:
Beal, F. E. L. 1915. Food of the robins and bluebirds of the United States. Bulletin of the U.S. Department of Agriculture 171:1-31.

Source citation:
Allen Hurlbert. 2017. Avian Diet Database.

Source archive URL:
https://github.com/cooperrlynn/dietdatabase/archive/4f91e5649a21bc21bb6a74b43e8643a9b3f8788b.zip

Reference citation:
Beal, F. E. L. 1915. Food of the robins and bluebirds of the United States. Bulletin of the U.S. Department of Agriculture 171:1-31.

Source citation:
Allen Hurlbert. 2017. Avian Diet Database.

Source archive URL:
https://github.com/hurlbertlab/dietdatabase/archive/de2b062bf553c6810839ced1baa3a0baf4d941d3.zip

Reference citation:
Beal, F. E. L. 1915. Food of the robins and bluebirds of the United States. Bulletin of the U.S. Department of Agriculture 171:1-31.

Source citation:
Allen Hurlbert. 2017. Avian Diet Database.

Source archive URL:
https://github.com/lanescher/dietdatabase/archive/1c739f6fab3ef7b74b491995f1349b51339df89f.zip