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. 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/georgeni2442/dietdatabase/archive/204b664ea3314bf7dd1c27226767cd62fff4130f.zip

Reference citation:
Mason Maron. 2019. Turdus migratorius eating Crataegus monogyna. iNaturalist.org. Accessed at on 23 Jan 2021.

Source citation:
http://iNaturalist.org is a place where you can record what you see in nature, meet other nature lovers, and learn about the natural world.

Source archive URL:
https://github.com/globalbioticinteractions/inaturalist/archive/8d3e240982f0f68b3da2767abe9b27e5bbfeed41.zip

Reference citation:
Beal, F. 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/jerichocook/BIOL395Project/archive/4942586a8792eef6b836a453820dfa8c361c76fb.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. 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/kinseyfish/dietdatabase/archive/7508fd9e83403d39ac8b8ceee6f92b3d537d4f9d.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