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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...
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 stopovers for mule deer (Odocoileus hemionus) in the Carson River population in California...
The Egg Lake Rocky Mountain elk (Cervus canadensis nelsoni) sub-herd range extends northeast from the town of McCloud around Ash Creek to the Big Valley Mountains and as far east as Highway 139 near the community of Hackamore. During the winter, this sub-herd primarily resides to the east of Big Valley Mountains near Egg Lake in Modoc County, California. They migrate east to private timberlands and spend the spring and summer just outside of McCloud, California. Topography of this area is relatively flat, but gradually transitions to steeper slopes around creeks, and typical habitat includes Ponderosa pine (Pinus ponderosa), Sierran mixed conifer, and montane hardwood conifer forests. Another sub-herd is known to...
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 stopovers for mule deer in the Doyle population...
The winter range of the West Goose Lake Rocky Mountain elk (Cervus canadensis nelsoni) sub-herd is located north of Alturas and west of Highway 395 within the Devil’s Garden Ranger District of the Modoc National Forest. This area is characterized by juniper (Juniperus occidentalis) woodlands, and sagebrush flats with some stands of lodgepole (Pinus contorta) and ponderosa pine (Pinus ponderosa) throughout flat, rocky terrain. From this area, a portion of the herd migrates approximately 50 miles north into Oregon’s Fremont National Forest, habitat that primarily consists of lodgepole and ponderosa pine forests. Minimal barriers exist along this migration route since the corridor primarily occurs on land managed by...
The East Shasta Valley sub-herd of Rocky Mountain elk (Cervus canadensis nelsoni) spend most of their time on private ranchlands in Shasta Valley in the winter. This area offers patches of oak woodlands and grasslands on gentle slopes. In the spring, elk migrate to their summer range around Grass Lake, Bull Meadows, and Deer Mountain where the habitat is primarily characterized by mixed conifer timber stands of Ponderosa pine (Pinus ponderosa), lodgepole pine (Pinus contorta) and Douglas fir (Pseudotsuga menziesii). The meadows around Grass Lake seem especially important to this sub-herd, as neonatal calves have been documented in this area since at least 1984 (Fischer 1987). Some animals from this sub-herd migrate...
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...
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 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,...
Migratory mule deer (Odocoileus hemionus) within the San Joaquin Watershed occupy most of the watershed above Kerckhoff Reservoir, Fresno and Madera Counties, California. Human infrastructure in the watershed is widespread and includes residential, water control, hydroelectric power, and recreational use developments. Steep topography between winter and summer range limit crossing points along the San Joaquin River. Habitat conditions favoring deer declined from a peak around 1950, resulting in a reduction in the deer population. The current deer population is believed to be about 4,000. A massive wildfire burned through most of the watershed in 2020, dramatically changing habitat conditions in some areas. These...
    map background search result map search result map Migration Stopovers of Mule Deer in the Upper San Joaquin Watershed Herd in California Migration Stopovers of Elk in the East Shasta Valley Herd in California Migration Stopovers of Elk in the Egg Lake Herd in California Migration Stopovers of Elk in the West Goose Lake Herd in California Migration Stopovers of Mule Deer in the Carson River Herd in California and Nevada Migration Stopovers of Mule Deer in the Doyle Herd in California Migration Stopovers of Mule Deer in the Modoc Interstate Herd in California Migration Stopovers of Mule Deer in the Jawbone Ridge Herd in California Migration Stopovers 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 Migration Stopovers of Mule Deer in the Verdi-Truckee Herd in California and Nevada Migration Stopovers of Mule Deer in the Upper San Joaquin Watershed Herd in California Migration Stopovers of Mule Deer in the Doyle Herd in California Migration Stopovers of Elk in the Egg Lake Herd in California Migration Stopovers of Mule Deer in the Loyalton Herd in California and Nevada Migration Stopovers of Elk in the East Shasta Valley Herd in California Migration Stopovers of Mule Deer in the Jawbone Ridge Herd in California Migration Stopovers of Mule Deer in the Carson River Herd in California and Nevada Migration Stopovers of Elk in the West Goose Lake Herd in California Migration Stopovers of Mule Deer in the Modoc Interstate Herd in California