Sage Grouse

What is special about the greater sage grouse?
It is the largest grouse in North America
What are the two subspecies of sage grouse?
Gunnison and Greater
What is the greater sage grouse range?
11 western states and 2 Canadian provinces
Gunnison are found in Colorado and Utah
How much habitat have the greater sage grouse lost?
50%
How much has the population of sage grouse declined?
80%
What are the four types of migrations done by sage grouse?
Populations with distinct breeding, wintering, and summer habitats

Populations with distinct summer areas and integrated breeding and winter habitats

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Populations with distinct winter areas, but integrated breeding and summer habitats

Nonmigratory

What initiates migrations?
Dry conditions during summer and spring, cold conditions in winter
What is a habitat area for migratory sage grouse?
1000 square miles
What are breeding grounds called?
Leks
How much of the mating will the male at the center of the lek do?
60-85%
When do males perform strutting displays?
6-10 a minute, 3-4 hours a day, sunrise
What is the average clutch size?
6-10 eggs
What is the incubation period?
25-27 days
Where do sage grouse nest?
Under sagebrush
What is brood rearing habitat?
upland sagebrush with >15% canopy cover of grasses and forbs
What is the fall and winter habitat?
Sagebrush habitats with ~20% canopy cover
How should habitat be managed for sage grouse breeding?
Manage cover for 15-25% sage grouse cover, with perennial herbaceous cover of around 7 inches in height
How should habitat be managed for sage grouse winter and fall habitats?
Manage for 10-30% sagebrush cover at least 10-15 inches tall
What is a major cause of mortality for sage grouse, and how can it be managed for?
Fences, and it can be managed for by increasing the visibility of fences within 1 mile of seasonal ranges
What should not be placed near seasonal habitats?
Powerlines or other tall structures
What was the herbicide that caused the loss of sage grouse habitat?
2,4-D
What effects does burning have on sage grouse habitats?
Long term negative effects
What should harvest rate be?
<10% of estimated fall population
What is the primary cause of mortality?
Predation (Taste like chicken)
What disease affects sage grouse?
West Nile Viruse