Its diet is composed of lemmings, Lemmus
trimucronatus and Dicrostonyx groenlandicus, and greater snow geese Chen caerulescens atlanticus, mostly eggs and goslings (Bety and Gauthier 2002, Careau et al.
and Myodes rutilus), and lemmings (Lemmus
trimucronatus and Dicrostonyx groenlandicus) are also presumably present in the area (MacDonald and Cook 2009) and may represent important prey for Lynx in Katmai National Park during periods of low Snowshoe Hare abundance.
Reported food items include reindeer/caribou (Rangifer tarandus), moose (Alces alces), mountain goats (Oreamnos americanus), sheep (Ovis spp.), beaver (Castor spp.), marmots (Marmota spp.), ground squirrels (Spermophilus spp.), hares (Lepus spp.), voles (Microtus spp.), lemmings (Lemmus
spp.), fox (Vulpes vulpes), birds, bird eggs, frogs, insect larvae, berries, and marine mammals (Rausch and Pearson, 1972; Magoun, 1987; Samelius et al., 2002; Copeland and Whitman, 2003; Lofroth et al., 2007).