Mammal

Elk

Cervus canadensis nelsoni
Mammal Fort Clatsop, near present-day Astoria, Oregon New to Western Science
Elk

Photo: Frank Schulenburg, CC BY-SA 4.0

Common Names
Elk / Red Deer
Habitat
Mountain meadows, forests, and river valleys of the Pacific Northwest
First Observed
1805-12-01
Observed At
Fort Clatsop, near present-day Astoria, Oregon

While elk were known to Eastern Americans, Lewis and Clark encountered the Rocky Mountain subspecies in prodigious numbers and provided detailed descriptions that distinguished it from the eastern variety. Elk were a critical food source for the expedition, particularly during the winter at Fort Clatsop where they subsisted almost entirely on elk meat. Lewis recorded killing 131 elk during their Pacific coast winter, documenting the species’ behavior, antler growth, and seasonal movements.

Journal Excerpt

Lewis, March 12, 1806: "The Elk is a much more eligible animal for the voyager than either the deer or the Antilope. it is more easily approached and in this country is much more abundant. the flesh is more nutritious, and a far greater quantity obtained from each animal."

Recent sightings

Where it’s being seen today

1 research-grade iNaturalist observation between 2025–2025. Most recent: 2025-06-23. Sourced from Terrain360 trail captures, cached locally.

Journal References

15 journal entries mention Elk

Nov 2 1804
Joseph Whitehouse: November 2, 1804
...8" Ins‘ the[y] had good Success the[y] kill? 34 deers, 10 Elks and 5 Buffelows, in all the[y] had Upwards of 20 hundred W! Nothing Else happ™? Extraordinary Un...
Feb 25 1805
Fort Mandan, preparing for departure — Patrick Gass: February 25, 1805
...i inthe © hee horizon 3 these enlivened with the buffaloe, elk, ack. i os _ and otheranimals which in-vast numbers feed ‘upon: a) oe the e plains or pursue thei...
May 20 1805
Missouri River near Musselshell River — John Ordway: May 20, 1805
...pily confined to the points. Cap* Clark killed two Deer and Elk. the hunters killed Several Elk and Several Deer, mearly for the Skins to make Leagins [two or thre...
May 31 1805
Missouri River, first view of Rocky Mountains — Joseph Whitehouse: May 31, 1805
...t which was killed last night. one of the hunters killed an Elk. we proceeded on. ab‘ 11 oC. began to rain, rained moderately for Some time. we passed verry high...
Jun 1 1805
Missouri River near Marias River approach — Joseph Whitehouse: June 1, 1805
...l large Island cov- ered with large & Small timber Saw Some Elk on it. the hills & bluffs are not So high on the river as they have been for Some time. about 2 oC....
Jun 3 1805
Joseph Whitehouse: June 3, 1805
...be the best for us to take. the hunters killed 4 buffaloe 3 Elk 3 beaver & Deer &c. the Cap* Gave each man a dram of ardent Spirits. I killed 2 Elk myself to day, ...
Jun 29 1805
Great Falls Portage — Joseph Whitehouse: June 29, 1805
....S. one deer killed this day. a white bear Seen. pleanty of Elk sign. we Saw a great many different kinds of Snakes along the R [iver].
Aug 6 1805
Jefferson/Beaverhead River near present-day Dillon — Joseph Whitehouse: August 6, 1805
... all returned in the evening had killed 3 Deer and one faun Elk. we blew the horn & fired Several guns, expecting the man who went out this morning George Shannon ...
Aug 6 1805
Jefferson/Beaverhead River near present-day Dillon — John Ordway: August 6, 1805
...evening all the hunters returned had killed 3 deer & a faun Elk the man who left us this morning has not returned and we expect he is lost again, his name is georg...
Jun 28 1806
Successful Bitterroot crossing with Nez Perce guides — Patrick Gass: June 28, 1806
...tle grass last night. Some hunters went out, as we saw some elk signs here, and our meat is exhausted. We still have a good stock of roots, which we pound and make...
Jul 8 1806
Lewis: to Great Falls / Clark: to Three Forks — John Ordway: July 8, 1806
... large ex- tensive plains, crossed Several large creeks Saw elk & deers, and goats or antelopes, our course ab* South Struck the trail of the party at about 12 mil...
Jul 10 1806
Lewis: to Great Falls / Clark: to Three Forks — Patrick Gass: July 10, 1806
... or cataracts. LEWIS AND CLARK EXPEDITION — 259 deer, two elk and a bear. The road was very muddy after the rain. The country on both sides is composed of beauti...
Jul 13 1806
Lewis: Great Falls / Clark: crossing to Yellowstone — John Ordway: July 13, 1806
... we have seen them be- fore, the hunters Saw large gangs of Elk in this valley.
Jul 28 1806
Lewis/Clark descending Missouri/Yellowstone to reunion — John Ordway: July 28, 1806
...ossable. Soon overtook the 2 hunters who had killed Several Elk a buffaloe & one beaver, we now keep to gether and are concerned about Serg* Gass & willard who wen...
Jul 31 1806
Lewis/Clark descending Missouri/Yellowstone to reunion — Patrick Gass: July 31, 1806
...als to rain hard; about 10 o’clock we saw a great gang of elk on a small island, where we halted and in a short time killed fifteen of them. We took the skins an...

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