. . . . . . . . . "66.0"^^ . "17.0"^^ . "1998-01-01T00:00:00Z"^^ . . "Falco rusticolus" . . "Microtus agrestis" . . "Nystr�m, J., Dal�n, L., Hellstr�m, P., Ekenstedt, J., Angleby H., & Angerbj�rn, A. 2006. Effect of Local Prey Availability on Gyrfalcon Diet: DNA Analysis on Ptarmigan Remains at Nest Sites. Journal of Zoology 269:57-64" . . . . "Allen Hurlbert. 2017. Avian Diet Database." .