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This diet is similar to the northern spotted owl, and the addition of barred owls to the northern spotted owl’s range creates increased competition for food. [7] In the same areas, northern spotted owls require around three to four times more range than barred owls, which places more strain on the northern spotted owls. [8]
The northern spotted owl has a nearly contiguous range from southwestern British Columbia south through western Washington and Oregon to Marin County, California.The California spotted owl's range overlaps this range in the southern Cascade Range, and extends south through the western Sierra Nevada to Tulare County, with discrete populations in mountainous areas of coastal and southern ...
The barred owl (Strix varia), also known as the northern barred owl, striped owl or, more informally, hoot owl or eight-hooter owl, is a North American large species of owl. A member of the true owl family, Strigidae, they belong to the genus Strix , which is also the origin of the family's name under Linnaean taxonomy .
Northern spotted owl populations have been rapidly declining due in part to competition from invasive barred owls, which originate in the eastern United States. Northern spotted owls are listed as ...
Across the region at least half of spotted owls have been lost, with declines of 75% or more in some study areas, said Katherine Fitzgerald, who leads the wildlife service's northern spotted owl ...
The northern limit is defined by the Columbia River, ... and western red-backed vole may constitute more than 75% of the northern spotted owls diet. [5]
Trained shooters will target barred owls over 30 years across a maximum of about 23,000 square miles (60,000 square kilometers) in California, Oregon and Washington. The U.S. Fish and Wildlife Service goal is to kill up to 452,000 barred owls and halt the decline of competing northern spotted owls and California spotted owl s.
To save the imperiled spotted owl from potential extinction, U.S. wildlife officials are embracing a contentious plan to deploy trained shooters into dense West Coast forests to kill almost a half ...