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About
Ursus arctos (Grizzly Bear; Brown Bear)
Diet Overlap
Competing Species
Common Prey Count
Acanthis flammea
(Common Redpoll)
1
Accipiter gentilis
(Northern Goshawk)
4
Accipiter nisus
(Eurasian Sparrowhawk)
1
Accipiter striatus
(Sharp-shinned Hawk)
1
Aegolius funereus
(Boreal Owl)
1
Alces alces
(moose)
5
Ambystoma maculatum
(Spotted Salamander)
1
Anaxyrus americanus
(American Toad)
1
Anthophora abrupta
(miner bee)
1
Apis mellifera
(honey bee)
1
Aporia crataegi
(Black-veined White Butterfly)
1
Aquila chrysaetos
(Golden Eagle)
8
Archilochus colubris
(Ruby-throated Hummingbird)
1
Ardea herodias
(Great Blue Heron)
1
Asio otus
(Long-eared Owl)
1
Athene cunicularia
(Burrowing Owl)
1
Athene noctua
(Little Owl)
1
Baeolophus bicolor
(Tufted Titmouse)
1
Bison bonasus
(
European bison
)
2
Bombus hortorum
(
Small Garden Humble-bee
)
1
Bombus jonellus
(Heath Humble-bee)
1
Bombus lapidarius
(
Stone Humble-bee
)
1
Bombus lucorum
(
White-tailed bumblebee
)
1
Bombus pascuorum
(
Common Carder-bee
)
1
Bombus polaris
(Bumblebee)
4
Bombus pratorum
(
Early-nesting Humble-bee
)
1
Bombus rupestris
(Hill Cuckoo-bee)
1
Bonasa umbellus
(Ruffed Grouse)
6
Branta hutchinsii
(Cackling Goose)
2
Brenthis ino
(Lesser Marbled Fritillary)
1
Bromius obscurus
(Western Grape Rootworm)
1
Bubo bubo
(Eurasian Eagle-Owl)
1
Bubo virginianus
(Great Horned Owl)
1
Buteo jamaicensis
(Red-tailed Hawk)
1
Buteo lagopus
(
Rough-legged Hawk
)
3
Calcarius lapponicus
(Lapland Longspur)
1
Calidris mauri
(Western Sandpiper)
1
Calidris tenuirostris
(Great Knot)
3
Callorhinus ursinus
(Northern Fur Seal)
1
Canis latrans
(Coyote)
6
Canis lupus
(
Wolf
)
13
Carpodacus sipahi
(Scarlet Finch)
1
Carterocephalus palaemon
(Arctic skipper)
1
Catharus ustulatus
(
Swainson's Thrush
)
2
Cerorhinca monocerata
(Rhinoceros Auklet)
1
Cervus elaphus
(
wapiti or elk
)
4
Charadrius vociferus
(Killdeer)
1
Chionomys nivalis
(European snow vole)
1
Circus cyaneus
(
Northern Harrier
)
1
Clossiana freija
(Freija Fritillary)
1
Corvus corax
(
Northern Raven
)
4
Cuon alpinus
(
Dhole
)
1
Dryobates pubescens gairdnerii
(Downy Woodpecker)
1
Eptesicus fuscus
(big brown bat)
1
Eurycea guttolineata
(Three-lined Salamander)
1
Falcipennis canadensis
(Spruce Grouse)
1
Falcipennis canadensis franklinii
(Franklin’s Grouse)
1
Falco rusticolus
(Gyrfalcon)
2
Falco sparverius
(American Kestrel)
1
Felis silvestris
(
Wildcat
)
1
Gavia immer
(
Great Northern Loon
)
1
Gulo gulo
(Wolverine)
5
Gypaetus barbatus
(Bearded Vulture)
1
Haliaeetus albicilla
(White-tailed Eagle)
1
Haliaeetus leucocephalus
(Bald Eagle)
1
Lagopus lagopus
(
Willow Ptarmigan
)
4
Lagopus leucura
(White-tailed Ptarmigan)
1
Lagopus muta
(Rock Ptarmigan)
1
Lamna ditropis
(
Salmon shark
)
1
Lanius excubitor
(
Northern Shrike
)
1
Larus schistisagus
(Slaty-backed Gull)
1
Lemmus sibiricus
(
brown lemming
)
3
Leptopterna ferrugata
1
Lepus americanus
(Snowshoe Hare)
2
Lepus othus
(
Alaskan Hare
)
1
Limosa haemastica
(Hudsonian Godwit)
1
Lithobates sylvaticus
(Wood Frog)
1
Lontra canadensis
(
northern river otter
)
1
Lygocoris pabulinus
(Common Green Capsid)
2
Lygus rugulipennis
1
Lynx canadensis
(
lynx
)
4
Lynx lynx
(Eurasian Lynx)
3
Lynx pardinus
(
Iberian Lynx
)
1
Lynx rufus
(Bobcat)
1
Lyrurus tetrix
(
Eurasian Black Grouse
)
1
Marmota caligata
(hoary marmot)
3
Marmota olympus
(Olympic marmot)
1
Martes americana
(
American Marten
)
10
Martes flavigula
(Yellow-throated Marten)
1
Martes foina
(Beech Marten)
1
Martes martes
(European Pine Marten)
1
Martes zibellina
(Sable)
2
Megaceryle alcyon
(Belted Kingfisher)
1
Meleagris gallopavo
(Wild Turkey)
1
Mephitis mephitis
(Striped Skunk)
1
Mergus merganser
(Common Merganser)
1
Microtus oeconomus
(tundra vole)
1
Microtus townsendii
(Townsend's vole)
1
Microtus xanthognathus
(
taiga vole
)
1
Mustela erminea
(
Ermine
)
2
Mustela frenata
(Long-tailed Weasel)
1
Mustela nivalis
(Least Weasel)
3
Myodes rufocanus
(gray red-backed vole)
5
Myodes rutilus
(northern red-backed vole)
7
Naemorhedus goral
(goral)
1
Numenius tahitiensis
(Bristle-thighed Curlew)
4
Ochotona collaris
(Collared Pika)
2
Ochotona princeps
(
pika
)
1
Odocoileus hemionus
(mule deer)
1
Orcinus orca
(
Killer Whale
)
1
Oreamnos americanus
(
mountain goat
)
1
Oriolus oriolus
(Eurasian Golden Oriole)
1
Ovibos moschatus
(
muskox
)
1
Ovis canadensis
(bighorn sheep)
2
Ovis dalli
(
Dall's sheep
)
2
Pandion haliaetus
(Osprey)
1
Panthera tigris
(Tiger)
1
Phalacrocorax auritus
(Double-crested Cormorant)
1
Phenacomys intermedius
(
western heather vole
)
2
Phenacomys ungava
(
eastern heather vole
)
3
Pieris napi
(Green-veined White Butterfly)
1
Pinicola enucleator
(Pine Grosbeak)
2
Pituophis catenifer
(
Gopher Snake
)
1
Plethodon cinereus
(
Eastern Red-backed Salamander
)
1
Pluvialis fulva
(
Pacific Golden-Plover
)
1
Podiceps nigricollis
(
Eared Grebe
)
1
Poecile carolinensis
(Carolina Chickadee)
1
Poecile hudsonicus
(Boreal Chickadee)
4
Polygonia c-album
(Comma Butterfly)
1
Pseudacris crucifer
(Spring Peeper)
1
Puma concolor
(
Cougar
)
3
Rattus rattus
(black rat)
1
Scalopus aquaticus
(Eastern Mole)
1
Sitta carolinensis
(White-breasted Nuthatch)
1
Stercorarius longicaudus
(Long-tailed Jaeger)
1
Stercorarius pomarinus
(
Pomarine Skua
)
1
Strix aluco
(Tawny Owl)
1
Strix nebulosa
(
Great Grey Owl
)
4
Surnia ulula
(
Northern Hawk-Owl
)
1
Sus scrofa
(
wild boar
)
1
Sylvilagus audubonii
(Desert Cottontail)
1
Tamias dorsalis
(cliff chipmunk)
1
Tamias minimus
(least chipmunk)
1
Tamias ruficaudus
(red-tailed chipmunk)
2
Tamias townsendii
(Townsend's chipmunk)
1
Tamiasciurus hudsonicus
(red squirrel)
1
Taxidea taxus
(
American Badger
)
1
Tetrao urogallus
(Western Capercaillie)
2
Tetrastes bonasia
(Hazel Grouse)
1
Thomomys talpoides
(northern pocket gopher)
1
Thryothorus ludovicianus
(Carolina Wren)
1
Tyto alba
(
Barn Owl
)
1
Urocitellus columbianus
(Columbian ground squirrel)
2
Urocitellus parryii
(Arctic ground squirrel)
2
Ursus americanus
(
black bear
)
14
Vipera berus
(Adder, Northern Viper)
1
Vulpes lagopus
(
Arctic Fox
)
3
Vulpes vulpes
(Red Fox)
10
Zamenis longissimus
(Aesculapean Snake)
1
Zonotrichia leucophrys
(White-crowned Sparrow)
2