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Sage Grouse
Test on Sage Grouse
25
Environmental Studies
Undergraduate 2
11/15/2015

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Cards

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

Populations with distinct summer areas and integrated breeding and winter habitats

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

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