Reference citation: Euliss, J.N.H., and S.W. Harris. 1987. Feeding ecology of northern pintails and green-winged teal wintering in California. Journal of Wildlife Management 51:724-732.
Source citation: Allen Hurlbert. 2017. Avian Diet Database.
Source archive URL: https://github.com/Dryu0003/dietdatabase/archive/bbd9be71f5db476449b66d948e4938dce5900300.zip
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