The greater sage-grouse (Centrocercus urophasianus) has experienced significant changes in its range over the years, primarily due to habitat loss and fragmentation. Historically, these birds inhabited vast expanses of sagebrush ecosystems across the western United States and parts of Canada. However, their range has shrunk considerably due to a variety of factors.
Several reasons for the change in the greater sage-grouse's range include:
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Habitat Destruction: Urban development, agriculture, and other land-use changes have led to the conversion of sagebrush habitats into farmland and urban areas.
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Invasive Species: The introduction of non-native plants, such as cheatgrass, has altered the natural sagebrush landscape, making it less suitable for sage-grouse.
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Climate Change: Changes in temperature and precipitation patterns can impact sagebrush ecosystems and the availability of suitable habitats for sage-grouse.
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Energy Development: The rise of oil and gas extraction in sage-grouse habitats has resulted in further habitat fragmentation and disturbances.
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Livestock Grazing: Overgrazing by cattle and sheep can degrade the health of sagebrush rangelands, further reducing the quality of habitat for the grouse.
Overall, these factors have contributed to a notable decline in the range and population of the greater sage-grouse, prompting conservation efforts to protect and restore their habitats.