Animalia > Chordata > Mammalia > Artiodactyla > Bovidae > Ovis > Ovis dalli

Ovis dalli (Dall's sheep; Stone's sheep; Fannin's sheep; dall sheep)

Wikipedia Abstract

The Dall sheep (originally Dall's sheep), Ovis dalli, is a species of sheep native to northwestern North America, ranging from white to slate brown in color and having curved yellowish brown horns. Its closest relative is the more southern subspecies, Stone sheep (also spelled Stone's sheep) (Ovis dalli stonei), which is a slaty brown with some white patches on the rump and inside the hind legs.Research has shown the use of these subspecies designations is questionable.
View Wikipedia Record: Ovis dalli


EDGE Analysis

Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 5.8
EDGE Score: 1.92


Adult Weight [1]  138.67 lbs (62.90 kg)
Birth Weight [2]  6.21 lbs (2.82 kg)
Female Weight [1]  106.70 lbs (48.40 kg)
Male Weight [1]  170.64 lbs (77.40 kg)
Weight Dimorphism [1]  59.9 %
Female Maturity [2]  1 year 10 months
Male Maturity [2]  1 year 9 months
Diet [3]  Herbivore
Diet - Plants [3]  100 %
Forages - Ground [3]  100 %
Gestation [2]  5 months 23 days
Litter Size [2]  1
Litters / Year [2]  1
Maximum Longevity [2]  20 years
Weaning [2]  4 months 9 days


Name Countries Ecozone Biome Species Report Climate Land
Alaska-St. Elias Range tundra United States Nearctic Tundra
Alberta Mountain forests Canada Nearctic Temperate Coniferous Forests
Alberta-British Columbia foothills forests Canada Nearctic Temperate Coniferous Forests
Arctic foothills tundra Canada, United States Nearctic Tundra
Brooks-British Range tundra Canada, United States Nearctic Tundra
Central British Columbia Mountain forests Canada Nearctic Temperate Coniferous Forests
Cook Inlet taiga United States Nearctic Boreal Forests/Taiga
Copper Plateau taiga United States Nearctic Boreal Forests/Taiga
Fraser Plateau and Basin complex Canada Nearctic Temperate Coniferous Forests
Interior Alaska-Yukon lowland taiga Canada, United States Nearctic Boreal Forests/Taiga
Interior Yukon-Alaska alpine tundra Canada, United States Nearctic Tundra
Muskwa-Slave Lake forests Canada Nearctic Boreal Forests/Taiga
North Central Rockies forests Canada, United States Nearctic Temperate Coniferous Forests
Northern Cordillera forests Canada Nearctic Boreal Forests/Taiga
Northern transitional alpine forests Canada Nearctic Temperate Coniferous Forests
Ogilvie-MacKenzie alpine tundra Canada, United States Nearctic Tundra
Pacific Coastal Mountain icefields and tundra Canada, United States Nearctic Tundra
Yukon Interior dry forests Canada Nearctic Boreal Forests/Taiga

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
Arctic National Wildlife Refuge Ib 12402936 Alaska, United States
Denali Biosphere Reserve 1932364 Alaska, United States
Gates of the Arctic National Park Ib 184461 Alaska, United States
Ivvavik National Park II 2382752 Yukon, Canada
Kluane National Park and Reserve National Park Reserve II 5463436 Yukon, Canada
Nahanni National Park Reserve II 1309627 Northwest Territories, Canada
Noatak Biosphere Reserve 7500143 Alaska, United States  
Wrangell-St. Elias National Park and Preserve Ib 2476446 Alaska, United States


Prey / Diet

Arctagrostis latifolia (wideleaf polargrass)[4]
Carex bonanzensis (Yukon sedge)[4]
Carex garberi (elk sedge)[5]
Epilobium angustifolium subsp. angustifolium (Rosebay Willowherb)[5]
Equisetum arvense (scouring rush)[5]
Eriophorum scheuchzeri (white cottongrass)[4]
Salix alaxensis (feltleaf willow)[4]
Silene acaulis (moss campion)[4]

Prey / Diet Overlap

Competing SpeciesCommon Prey Count
Acanthis flammea (Common Redpoll)3
Alces alces (moose)5
Bombus jonellus (Heath Humble-bee)1
Bombus lucorum (White-tailed bumblebee)1
Bonasa umbellus (Ruffed Grouse)1
Branta hutchinsii (Cackling Goose)3
Bromius obscurus (Western Grape Rootworm)1
Calcarius lapponicus (Lapland Longspur)2
Castor canadensis (american beaver)1
Erethizon dorsatus (common porcupine)2
Lagopus lagopus (Willow Ptarmigan)1
Lagopus leucura (White-tailed Ptarmigan)2
Lemmus sibiricus (brown lemming)4
Lepus americanus (Snowshoe Hare)2
Lepus othus (Alaskan Hare)1
Lygocoris pabulinus (Common Green Capsid)1
Marmota caligata (hoary marmot)2
Microtus townsendii (Townsend's vole)1
Myodes rutilus (northern red-backed vole)5
Ochotona princeps (pika)1
Ovibos moschatus (muskox)4
Pinicola enucleator (Pine Grosbeak)1
Rangifer tarandus (caribou)5
Tamias townsendii (Townsend's chipmunk)1
Urocitellus parryii (Arctic ground squirrel)4
Ursus americanus (black bear)2
Ursus arctos (Grizzly Bear)2
Zonotrichia leucophrys (White-crowned Sparrow)1


Canis lupus (Wolf)[4]
Culiseta alaskaensis (Mosquito)[4]
Ursus arctos (Grizzly Bear)[4]


Parasitized by 
Marshallagia marshalli <Unverified Name>[6]
Marshallagia occidentalis <Unverified Name>[6]
Mycoplasma ovipneumoniae[7]
Nematodirus andersoni <Unverified Name>[6]
Nematodirus archari <Unverified Name>[6]
Nematodirus davtiani <Unverified Name>[6]
Nematodirus oiratianus <Unverified Name>[6]
Nematodirus spathiger[6]
Ostertagia circumcincta[6]
Ostertagia occidentalis <Unverified Name>[6]
Ostertagia ostertagi[6]
Ostertagia trifurcata[6]
Parelaphostrongylus odocoilei <Unverified Name>[6]
Protostrongylus stilesi <Unverified Name>[6]
Teladorsagia circumcincta <Unverified Name>[6]
Teladorsagia davtiani <Unverified Name>[6]
Teladorsagia trifurcata <Unverified Name>[6]
Wyominia tetoni <Unverified Name>[6]

Institutions (Zoos, etc.)

Institution Infraspecies / Breed 
Assiniboine Park Zoostonei
Calgary Zoo, Garden & Prehistoric Parkdalli
Chahinkapa Zoodalli
Dakota Zoodalli
Denver Zoological Gardensdalli
John Ball Zoological Gardendalli
Lion Country Safari Inc - Florida
Milwaukee County Zoological Gardensdalli
Nagoya Higashiyama Zoodalli
St. Paul's Como Zoodalli
Tallinn Zoodalli
Wilhelma Zoodalli
Yukon Wildlife Preserve
Zoo Krefeld GmbHdalli
Zoo Sauvage de St-Féliciendalli
Zoological Garden Praguedalli
Zoologická a botanická zahrada Plzendalli
Zoologischer Garten Leipzigdalli

Range Map

North America;



Attributes / relations provided by
1Ovis dalli, R. Terry Bowyer and David M. Leslie, Jr., MAMMALIAN SPECIES No. 393, pp. –7 (1992)
2de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774
3Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027
4Making The Forest And Tundra Wildlife Connection
5Exploring the Denali Food Web, ParkWise, National Park Service
6Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
7Nunn, C. L., and S. Altizer. 2005. The Global Mammal Parasite Database: An Online Resource for Infectious Disease Records in Wild Primates. Evolutionary Anthroplogy 14:1-2.
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 WWF WildFINDER
Images provided by Google Image Search
Abstract provided by DBpedia licensed under a Creative Commons License
Weather provided by NOAA METAR Data Access