The Warner Valley provides a number of unique animal habitats.
 These include lake, marsh, riparian, grasslands, sage steppe, dry forest, and rimrock.
 They range in elevation from approximately 4,500 feet (1,400 m) above sea level at the valley floor to over 8,000 feet (2,400 m) at the summit of Warner Peak.
 Marsh grasses are common along the lake shores.
 In the riparian areas, wild roses, choke cherry, wild plum, cottonwood, and willow are found.
 Beyond the wetlands, the valley becomes quite dry.
 Much of the North Warner Valley is semi-desert, where dwarf sagebrush, greasewood, and Western Juniper are the dominant vegetation.

The valley’s wildlife includes common high desert mammal species, resident birds, and migrant waterfowl.
 There are forty-two mammal species that live in the Warner Valley-Hart Mountain area.
 These include pronghorn, bighorn sheep, elk, mule deer, cougar, bobcat, and coyotes.
 Smaller mammals include jackrabbits, ground squirrels, and chipmunks.

There are 239 species of birds that live in the area or migrate through the Warner Valley.
 Species that nest in the areas around Crump Lake and Hart Lake include American white pelicans, double-crested cormorants, willets, Wilson's phalaropes, Canada geese, gadwalls, northern shovelers, black-crowned night herons, and numerous varieties of ducks and terns.
 In addition, sandhill cranes, white-faced ibis, great white egrets, and American avocets are found in the marshes and along the lake shores.
 At the Warner Wetlands Area of Critical Environmental Concern, administered by the Bureau of Land Management, there are observation blinds where American bitterns, black-necked stilts, cinnamon teal, tundra swans, Brewer's blackbirds, western meadowlarks, swallows, and nighthawks are commonly seen.

In the valley’s riparian areas, dusky flycatchers, yellow warblers, orange-crowned warblers, house wrens, and spotted towhees are common in the summer months.
 In the sage steppes and grasslands, summer residents include horned larks, Brewer's sparrows, vesper sparrows, common ravens, sage thrashers, sagebrush sparrows, black-throated sparrows, and greater sage grouse.
 In the rimrock areas, there are chukars, rock wrens, canyon wrens, cliff swallows, and barn swallows.
 The valley also hosts mountain chickadees, Cassin's finches, black-headed grosbeaks, green-tailed towhees, yellow-rumped warblers, MacGillivray's warblers, mountain bluebirds, white-headed woodpeckers, and flammulated owls.
 The larger birds include great horned owls, long-eared owls, prairie falcons, golden eagles, and bald eagles.
The Warner Valley provides a number of unique animal habitats.  These include lake, marsh, riparian, grasslands, sage steppe, dry forest, and rimrock.  They range in elevation from approximately 4,500 feet (1,400 m) above sea level at the valley floor to over 8,000 feet (2,400 m) at the summit of Warner Peak.  Marsh grasses are common along the lake shores.  In the riparian areas, wild roses, choke cherry, wild plum, cottonwood, and willow are found.  Beyond the wetlands, the valley becomes quite dry.  Much of the North Warner Valley is semi-desert, where dwarf sagebrush, greasewood, and Western Juniper are the dominant vegetation.
The valley’s wildlife includes common high desert mammal species, resident birds, and migrant waterfowl.  There are forty-two mammal species that live in the Warner Valley-Hart Mountain area.  These include pronghorn, bighorn sheep, elk, mule deer, cougar, bobcat, and coyotes.  Smaller mammals include jackrabbits, ground squirrels, and chipmunks.
There are 239 species of birds that live in the area or migrate through the Warner Valley.  Species that nest in the areas around Crump Lake and Hart Lake include American white pelicans, double-crested cormorants, willets, Wilson's phalaropes, Canada geese, gadwalls, northern shovelers, black-crowned night herons, and numerous varieties of ducks and terns.  In addition, sandhill cranes, white-faced ibis, great white egrets, and American avocets are found in the marshes and along the lake shores.  At the Warner Wetlands Area of Critical Environmental Concern, administered by the Bureau of Land Management, there are observation blinds where American bitterns, black-necked stilts, cinnamon teal, tundra swans, Brewer's blackbirds, western meadowlarks, swallows, and nighthawks are commonly seen.
In the valley’s riparian areas, dusky flycatchers, yellow warblers, orange-crowned warblers, house wrens, and spotted towhees are common in the summer months.  In the sage steppes and grasslands, summer residents include horned larks, Brewer's sparrows, vesper sparrows, common ravens, sage thrashers, sagebrush sparrows, black-throated sparrows, and greater sage grouse.  In the rimrock areas, there are chukars, rock wrens, canyon wrens, cliff swallows, and barn swallows.  The valley also hosts mountain chickadees, Cassin's finches, black-headed grosbeaks, green-tailed towhees, yellow-rumped warblers, MacGillivray's warblers, mountain bluebirds, white-headed woodpeckers, and flammulated owls.  The larger birds include great horned owls, long-eared owls, prairie falcons, golden eagles, and bald eagles.
Warner Valley