Conservation Ptarmigans as well as snowshoe hares, Ruffed and Spruce grouse, lemmings, lynx, red and arctic foxes, and Snowy Owls are animals that undergo cyclical population fluctuations.
(Snowy Owls; are; animals that undergo cyclical population fluctuations) (animals; undergo; cyclical population fluctuations)
Snowy Owls animals
are undergo
animals that undergo cyclical population fluctuations
cyclical population fluctuations