Gyrfalcon predation on ptarmigan: numerical andfunctional responses admin December 27, 2011 Galliformes, North America, Phasianidae, science article Comments Ptarmigan (Lagopus muta) Science Article 7 abstract Gyrfalcon predation on ptarmigan during the breeding season was studied innorth-east Iceland 1981 ← Previous PostNext Post → Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.