Recorded on brambles, and handed down to its species.
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Hurlbert, A. H., Olsen, A. M., Sawyer, M. M., and Winner, P. M. 2021. Avian Diet Database. https://doi.org/10.5281/zenodo.5151056
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Hale, Kayla R. S. and Curlis, John David and Auteri, Giorgia G. and Bishop, Sasha and French, Rowan L. K. and Jones, Lance E. and Mills, Kirby L. and Scholtens, Brian G. and Simons, Meagan and Thompson, Cody and Tourville, Jordon and Valdovinos, Fernanda S. (2024). A highly resolved network reveals the role of terrestrial herbivory in structuring aboveground food webs.
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iNaturalist community observations of species interactions.
References
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Wheelwright, N. T. 1986. The diet of American Robins: an analysis of U.S. Biological Survey records. Auk 103:710-725.
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Jordon Tourville (Expert)
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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.
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Beal, F. E. L. 1907. Birds of California in relation to the fruit industry, Part 1. U.S. Department of Agriculture Biological Survey Bulletin, No. 30.
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iNaturalist observation 237775122