Reference citation:
Kenneth, Wilson A., 1938. Owl Studies at Ann Arbor, Michigan. Auk 55: 187-197.

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

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