[1] According to the National Biodiversity Information System of Comisión Nacional para el Conocimiento y Uso de la Biodiversidad (CONABIO) in Papigochic Flora and Fauna Protection Area there are over 665 plant and animal species from which 40 are in at risk category and 14 are exotics.

[4] Oak woodland is found at lower elevations on the eastern side of the Sierra, particularly on east- and southeast-facing slopes.

Understory herbs and grasses include Penstemon campanulatus, Lupinus marschallianus, Pteridium aquilinum, Packera candidissima, Taraxacum officinale, Piptochaetium afimbriatum, Muhlenbergia montana, Bouteloua gracilis, Zuloagaea bulbosa, and Bromus anomalus.

Native birds include the thick-billed parrot (Rhynchopsitta pachyrhyncha), bald eagle (Haliaeetus leucocephalus), Cooper's hawk (Accipter cooperii), sharp-shinned hawk (Accipiter striatus), zone-tailed hawk (Buteo albonotatus), peregrine falcon (Falco peregrinus) common black hawk (Buteogallus anthracinus), Gould's wild turkey (Meleagris gallopavo mexicanus), Clark's nutcracker (Nucifraga columbiana), eared quetzal (Euptilotis neoxenus), Mexican spotted owl (Strix occidentalis lucida), Montezuma quail (Cyrtonyx montezumae), Arizona woodpecker (Leuconotopicus arizonae), American dipper (Cinclus mexicanus), Townsend's solitaire (Myadestes townsendi), brown-backed solitaire (Myadestes occidentalis), Sinaloa martin (Progne sinaloae), and Aztec thrush (Ridgwayia pinicola).

[4] Native fishes include the Mexican stoneroller (Campostoma ornatum), Yaquí sucker (Catostomus bernardini), and bicolor minnow (Dionda dichroma).