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The Siskiyou mule deer herd migrates from winter ranges primarily north and east of Mount Shasta (i.e., Day Bench, Lake Shastina, Montague, Mount Dome, Mount Hebron, Sheep-Mahogany Mountain, Tionesta, and Wild Horse Mountain) to sprawling summer ranges scattered between the Mount Shasta Wilderness in the west and the Burnt Lava Flow Geological Area in the east. A small percentage of the herd are residents, residing largely within winter ranges across the central and northeast areas of the herd’s annual distribution. The total population size of the Siskiyou herd is unknown, but adult deer densities averaged 6.01 deer per km2 on summer ranges in 2017 and 5.16 deer per km2 on winter ranges in 2019 (Wittmer and others,...
The Jawbone Ridge mule deer (Odocoileus hemionus) herd is a sub-herd of the Tuolumne herd, which migrate to the Jawbone Ridge flats in the winter in Tuolumne, Mariposa, and Alpine Counties. Additionally, a small sample of deer were captured from the Yosemite herd to determine herd overlap. GPS collars were normally set to take a location every 7 hours, and emit a signal Monday through Friday, 9am to 5pm. Some GPS collars were set to take a location fix every hour during periods of time when deer were thought to be migrating (May and November). The most important portion of the winter range is the Jawbone ridge flats, situated at an elevation of 4,000 feet. Deer migrate from here east into the high Sierra Nevada...
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The Blue Canyon mule deer herd winters in the western foothills of the Sierra Nevada south of Interstate 80. The winter range includes dense conifer and oak woodland that is shared with a resident portion of the herd on a mix of public and private lands. In the spring, the Blue Canyon herd migrates from their winter range eastward along two main paths both north and south of the Forest Hill Divide to higher elevation terrain near Soda Springs and the crest of the Sierra Nevada in the Granite Chief Wilderness. The summer range includes primarily mixed conifer opening up to high alpine granite near the crest of the Sierra Nevada. The population size is not well known due to limited surveys, but is considered stable...
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The Bucks Mountain-Mooretown mule deer herd winters in the western foothills of the Sierra Nevada. The winter range includes vernal pool grassland, oak woodland, and dense conifer that is shared with a resident portion of the herd on a mix of public and private lands. In the spring, the Bucks Mountain-Mooretown herd migrates along the U.S. Highway 70 corridor and high-elevation locations of the Sierra Nevada east and south to higher elevation terrain in the Plumas National Forest east of the Sierra Nevada near Quincy and La Porte, California. The summer range is primarily mixed conifer opening up to high alpine granite near the crest, and transitioning to a mix of conifer and shrub on the eastern side of the Sierra...
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The Salt Springs herd winters in the western foothills of the Sierra Nevada predominantly on private property from Tylers Corner south to Sheep Ranch. The summer range is in high-elevation terrain near Lower Bear River Reservoir and Salt Springs Reservoir. The winter range consists of mainly oak woodland habitat and the summer range includes primarily mixed conifer opening up to high alpine granite near the crest of the Sierra Nevada. The population size is unknown due to limited data. This GPS collaring project was designed as part of a region-wide effort to obtain abundance estimates for deer using fecal DNA and home range analyses, with pinpointing migration routes and identifying winter ranges a secondary priority....
A significant portion of the interstate Carson River herd summers in the Sierra Nevada range of California and migrates to a winter range near the California-Nevada border. Herd size has declined significantly (>70%) from historical peak levels, likely due to habitat loss and vehicle collisions. A large increase in housing development and traffic along the Highway 395 corridor during the past 20 years has contributed to population declines for this herd. Significant barriers include fencing along Carson River and outlying suburban areas in Carson City, Minden, and Gardnerville, Nevada. These data provide the location of migration routes for mule deer (Odocoileus hemionus) in the Carson River population in California...
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The Grizzly Flat herd winters in the western foothills of the Sierra Nevada near Grizzly Flats, California. The winter range includes conifer, vineyards, and oak woodland that is shared with a resident portion of the herd on a mix of private and public lands. In the spring, the Grizzly Flat herd migrates east to higher elevation terrain in the El Dorado National Forest, staying south of Interstate 50 and primarily north of U.S. Highway 88, to the crest of the Sierra Nevada. The summer range contains primarily mixed conifer opening up to high alpine granite near the crest of the Sierra Nevada. Although the population size of the Grizzly Flat herd is unknown due to limited surveys, it is considered stable to declining,...
The Verdi-Truckee mule deer (Odocoileus hemionus) herd winters south of I-80 in the Carson Range along the California-Nevada border, although a portion of this herd winters northeast of Verdi, Nevada on Peavine Mountain. Migration routes to summer range follow I-80 southwest, along both sides of the Truckee River, toward Martis Valley and Truckee, California. The summer range for this small herd (approximately 500 animals in 2019) is located east of Truckee and includes portions of Juniper Flat, Martis Creek, and the area south of the Truckee River to the confluence of Gray Creek. Migration behavior and timing of migration is dependent on seasonal weather conditions and snow depth during early winter. Significant...
The Loyalton mule deer (Odocoileus hemionus) herd winters west and northwest of Reno, Nevada along the California-Nevada border, extending into the Peterson Mountains, east of Highway 395 in Nevada. A portion of the herd also winters north of I-80 on Peavine Mountain in Nevada. This population represents an interstate migratory herd but also contains year-round residents in both states. Deer migrate southwest into the Sierra Nevada Mountains of California on both sides of Highway 89 from Truckee to Sierraville, mostly staying north of I-80 and into the Tahoe National Forest. Significant challenges include urban development, vehicle collisions on Highways 89, 395, and I80, and large-scale wildfires that have burned...
The Doyle mule deer (Odocoileus hemionus) herd migrates from a winter range in Honey Lake Valley and Upper Long Valley near Doyle, California along US Highway 395 in Lassen County, California and eastward into Plumas County and Plumas National Forest in the Sierra Nevada Mountains for the summer. Winter range also exists on the Nevada side of the border in Washoe County. Much of the winter range habitat is now deteriorated, lacking vegetation that historically provided forage. Highway 395 is a major barrier to migration, with hundreds of deer being killed annually trying to cross it. Population estimates were ~15,600 in 2019. These data provide the location of migration routes for mule deer in the Doyle population...
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The Downieville-Nevada City mule deer herd winters in the western foothills of the Sierra Nevada range. The winter range includes dense conifer and oak woodland that is shared with a resident portion of the herd on a mix of public and private lands. In the spring, the herd migrates north and east of Nevada City on both sides of the middle fork of the Yuba River, staying north of Interstate 80, to high-elevation summer range along the crest of the Sierra Nevada. The summer range is primarily mixed conifer habitat opening up to high alpine granite near the crest of the Sierra Nevada. The population size is unknown due to limited survey capacity, but the population is considered stable to declining, affected primarily...
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The East Tehama herd is the largest migratory population of mule deer in California (Hill and Figura, 2020). Population numbers peaked in the 1960s, but have declined in recent decades (Ramsey and others, 1981; California Department of Fish and Wildlife unpublished data). These mule deer migrate from a lower elevation winter range in the foothills east of the Sacramento Valley to upper elevation summer ranges in the southern Cascades and northern Sierra Nevada. Although portions of the herd winter on the California Department of Fish and Wildlife’s Tehama Wildlife Area and other public lands, the winter range also comprises many private ranchlands. The herd’s summer range includes significant portions of Lassen...
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The Grizzly Flat herd winters in the western foothills of the Sierra Nevada near Grizzly Flats, California. The winter range includes conifer, vineyards, and oak woodland that is shared with a resident portion of the herd on a mix of private and public lands. In the spring, the Grizzly Flat herd migrates east to higher elevation terrain in the El Dorado National Forest, staying south of Interstate 50 and primarily north of U.S. Highway 88, to the crest of the Sierra Nevada. The summer range contains primarily mixed conifer opening up to high alpine granite near the crest of the Sierra Nevada. Although the population size of the Grizzly Flat herd is unknown due to limited surveys, it is considered stable to declining,...
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The Manache mule deer herd contains both California mule deer (Odocoileus hemionus californicus) and Inyo mule deer (Odocoileus hemionus inyoensis). The herd predominantly covers the east slopes and crest of the Sierra Nevada. Elevation stretches from 3,200 ft on the Owens Valley winter range, to above 11,000 ft on the summer ranges in Sequoia National Park. The Manache herd migrates from winter ranges just west of U.S. Route 395 on the steep slopes and valleys of the Sierra Nevada near Dunmovin and Haiwee east to some of the highest elevations in the continental United States in Inyo and Sequoia National Forests. Deer numbers were very low by 1900, attributed largely to extreme overgrazing by domestic sheep and...
The Modoc Interstate mule deer (Odocoileus hemionus) herd migrates from a winter range near Clear Lake Reservoir in Modoc County, California north into Oregon in Klamath and Lake counties for the summer. Much of this herd likely resides in Oregon year-round as California population estimates (2000-3000) are lower than Oregon estimates (~15,000). Female mule deer were captured in Modoc in February 2017 and equipped with satellite collars manufactured by Lotek. Additional GPS data was collected between 1999-2001 from deer captured in 1999, and was included to supplement the small sample size of the 2017-2020 dataset. The data was collected with a priority to ascertain general distributions, survival, and home range,...
The Modoc Interstate mule deer (Odocoileus hemionus) herd migrates from a winter range near Clear Lake Reservoir in Modoc County, California north into Oregon in Klamath and Lake counties for the summer. Much of this herd likely resides in Oregon year-round as California population estimates (2000-3000) are lower than Oregon estimates (~15,000). Female mule deer were captured in Modoc in February 2017 and equipped with satellite collars manufactured by Lotek. Additional GPS data was collected between 1999-2001 from deer captured in 1999, and was included to supplement the small sample size of the 2017-2020 dataset. The data was collected with a priority to ascertain general distributions, survival, and home range,...
The Modoc Interstate mule deer (Odocoileus hemionus) herd migrates from a winter range near Clear Lake Reservoir in Modoc County, California north into Oregon in Klamath and Lake counties for the summer. Much of this herd likely resides in Oregon year-round as California population estimates (2000-3000) are lower than Oregon estimates (~15,000). Female mule deer were captured in Modoc in February 2017 and equipped with satellite collars manufactured by Lotek. Additional GPS data was collected between 1999-2001 from deer captured in 1999, and was included to supplement the small sample size of the 2017-2020 dataset. The data was collected with a priority to ascertain general distributions, survival, and home range,...
The Modoc Interstate mule deer (Odocoileus hemionus) herd migrates from a winter range near Clear Lake Reservoir in Modoc County, California north into Oregon in Klamath and Lake counties for the summer. Much of this herd likely resides in Oregon year-round as California population estimates (2000-3000) are lower than Oregon estimates (~15,000). Female mule deer were captured in Modoc in February 2017 and equipped with satellite collars manufactured by Lotek. Additional GPS data was collected between 1999-2001 from deer captured in 1999, and was included to supplement the small sample size of the 2017-2020 dataset. The data was collected with a priority to ascertain general distributions, survival, and home range,...
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The Grizzly Flat herd winters in the western foothills of the Sierra Nevada near Grizzly Flats, California. The winter range includes conifer, vineyards, and oak woodland that is shared with a resident portion of the herd on a mix of private and public lands. In the spring, the Grizzly Flat herd migrates east to higher elevation terrain in the El Dorado National Forest, staying south of Interstate 50 and primarily north of U.S. Highway 88, to the crest of the Sierra Nevada. The summer range contains primarily mixed conifer opening up to high alpine granite near the crest of the Sierra Nevada. Although the population size of the Grizzly Flat herd is unknown due to limited surveys, it is considered stable to declining,...
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The Kern River deer herd includes primarily California mule deer (Odocoileus hemionus californicus), but some Inyo mule deer (Odocoileus hemionus inyoensis) associate with California mule deer on the summer range. The population size peaked at 11,000 individuals in 1949, but in recent decades numbers have decreased to an estimated 3,500 deer in 1995 and 2,000 deer in 2001. The population size estimate is now, conservatively, approximately 4,000 individuals owing primarily to habitat expansion by the 2001 McNally Fire (California Department of Fish and Wildlife unpublished data). The Kern River herd winters in Sequoia National Forest north of Johnsondale and east of Slate Mountain. In the spring, they migrate northward...
map background search result map search result map Migration routes of Mule Deer in the Carson River Herd in California and Nevada Migration Routes of Mule Deer in the Doyle Herd in California Migration Corridors of Mule Deer in the Modoc Interstate Herd in California Migration Routes of Mule Deer in the Modoc Interstate Herd in California Migration Stopovers of Mule Deer in the Modoc Interstate Herd in California Winter Ranges of Mule Deer in the Modoc Interstate Herd in California Migration Stopovers of Mule Deer in the Jawbone Ridge Herd in California Migration Corridors of Mule Deer in the Loyalton Herd in California and Nevada Migration Stopovers of Mule Deer in the Verdi-Truckee Herd in California and Nevada California Mule Deer Blue Canyon Routes California Mule Deer Bucks Mountain-Mooretown Winter Range California Mule Deer Downieville-Nevada City Corridors California Mule Deer East Tehama Routes California Mule Deer Grizzly Flat Corridors California Mule Deer Grizzly Flat Routes California Mule Deer Grizzly Flat Stopovers California Mule Deer Kern River Corridors California Mule Deer Manache Routes California Mule Deer Salt Springs Corridors California Mule Deer Siskiyou Stopovers Migration Stopovers of Mule Deer in the Verdi-Truckee Herd in California and Nevada California Mule Deer Bucks Mountain-Mooretown Winter Range California Mule Deer Blue Canyon Routes California Mule Deer Salt Springs Corridors California Mule Deer Grizzly Flat Routes California Mule Deer Grizzly Flat Stopovers California Mule Deer Grizzly Flat Corridors California Mule Deer Kern River Corridors California Mule Deer Downieville-Nevada City Corridors California Mule Deer Manache Routes Winter Ranges of Mule Deer in the Modoc Interstate Herd in California Migration Routes of Mule Deer in the Doyle Herd in California Migration Corridors of Mule Deer in the Loyalton Herd in California and Nevada Migration Stopovers of Mule Deer in the Jawbone Ridge Herd in California Migration routes of Mule Deer in the Carson River Herd in California and Nevada California Mule Deer East Tehama Routes California Mule Deer Siskiyou Stopovers Migration Routes of Mule Deer in the Modoc Interstate Herd in California Migration Stopovers of Mule Deer in the Modoc Interstate Herd in California Migration Corridors of Mule Deer in the Modoc Interstate Herd in California