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Byrkjedal, I., Fjeldheim, V.B., Halvorsen, L.S. and Lislevand, T. 2022. Diet of three sympatric species of granivorous songbirds in a Norwegian high mountain area during the early breeding season. Ornis Norvegica. 45, (Dec. 2022), 16–26. DOI:https://doi.org/10.15845/on.v45i0.3639.