The Washington ground squirrel (Urocitellus washingtoni) is a squirrel found in the Pacific Northwest United States, in the states of Washington and Oregon. The species is listed as endangered in Oregon and is a candidate for endangered species listing in the United States, but is not currently listed. The IUCN formerly listed the species as vulnerable, but currently it is listed as near threatened.
The Washington ground squirrel lives in sagebrush or grassland habitats in the Columbia River Basin of Washington and Oregon. Washington ground squirrels hibernate / estivate 7–8 months each year. Adults breed shortly after emergence from hibernation in January or February and juveniles emerge from the natal burrow in March. Juveniles disperse away from the natal burrow and settle into new areas. All Washington ground squirrels gain weight and prepare for hibernation in late spring and early summer. Juveniles immerge for estivation in June or July, and adults begin estivating earlier, often in June.
One radiotracking study focused on dispersal of Washington ground squirrels. It found that 72% percent of juvenile males dispersed in April. Dispersal distances ranged from 40–3521 meters and the median dispersal distance was 880 meters. Twenty to 56% of radio-collared juvenile squirrels survived to estivation. Raptors and badgers were the primary causes of mortality. Survival rates of dispersers were higher than non-dispersers, mostly due to badger predation on natal sites.
Famous quotes containing the words washington, ground and/or squirrel:
“I thought it altogether proper that I should take a brief furlough from official duties at Washington to mingle with you here to-day as a comrade, because every President of the United States must realize that the strength of the Government, its defence in war, the army that is to muster under its banner when our Nation is assailed, is to be found here in the masses of our people.”
—Benjamin Harrison (1833–1901)
“...In the past, as now, [Hollywood] was a stamping ground for tastelessness, violence, and hyperbole, but once upon a time it turned out a product which sweetened the flavor of life all over the world.”
—Anita Loos (1888–1981)
“The squirrel hoards nuts and the bee gathers honey, without knowing what they do, and they are thus provided for without selfishness or disgrace.”
—Ralph Waldo Emerson (1803–1882)