EXTIRPATED & DECLINING SPECIES
IN BOULDER COUNTY
Other species to monitor in the plains: prairie dogs, ferruginous
hawk. Prairie dogs are a keystone species which means that
many other species depend on them within the food web, especially
raptors (birds of prey such as the ferruginous hawk). Prairie
dog colonies face a series threat from development county-wide.
PLAINS
Birds
Sharp-tailed grouse
(E)
Long-billed curlew (E)
American bittern (D)
Burrowing owl (D)
Red-headed woodpecker (D)
Northern harrier (D)
Swainson's hawk (D)
Loggerhead shrike (D)
Northern bobwhite (D)
Long-eared owl (D)
Brown thrasher (D)
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Mammals
Bison (E)
Black-footed ferret (E)
Pronghorn antelope (E)
White-tailed jackrabbit (D)
Preble's meadow jumping mouse (D)
Merriam's shrew (D)
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COUNTY-WIDE
Mammals
Gray wolf (E)
Grizzly bear (E)
River otter (E)
Other speices to keep an eye
on county-wide: elk (ability to migrate between high and low
elevations), all native fish.
MOUNTAINS
Mammals
Lynx (E)
Bobcat (E)
Wolverine (D)
Birds
Barrow's
goldeneye (E)
Mountain plover (E)
Northern goshawk (D)
Willow flycatcher (D)
Other
species to watch in the mountains: bighorn sheep, boreal toad,
northern leopard frog
Return to Extirpated
& Declining Species in Boulder County
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