Wildlife
Double-crested cormorant
Nannopterum auritum
Photo: Wikimedia Commons via Wikipedia
Habitat
Umatilla River
Conservation
Secure
First Observed
1805-10-20
Double-crested cormorants were known in the East, but not described until 1831. Lewis noted sighting, did not describe.
Recent sightings
Where it’s being seen today
40 research-grade iNaturalist observations between 2014–2025. Most recent: 2025-06-24. Sourced from Terrain360 trail captures, cached locally.
Journal References
5 journal entries mention Double-crested cormorant
Aug
25
1804
Lewis: August 25, 1804
...about 2 M.
distant S. a bird of heron kind as large as the Cormorant short tale long
leggs of a colour on the back and wings deep copper brown with a shade of
red. we...
Jan
2
1806
Lewis: January 2, 1806
...d hill Crane, large and
small gees, brown and white brant, Cormorant, duckan mallard, Canvisback
duck, and several other species of ducks, still remain with us; tho I ...
Mar
6
1806
Lewis: March 6, 1806
...species of the Coast, the large grey gull
of the Columbia, Cormorant, loons of two species, white, and the brown
brant, small and large geese, small and large Swan, th...
Mar
7
1806
Lewis: March 7, 1806
... fourth speceis not so common
as either of the others. the cormorant is a large black duck which feeds
on fish; I perceive no difference between it and those found in ...
Mar
24
1806
Lewis: March 24, 1806
...e swan, white brant nor a small goose is to be seen. a few
Cormorant, duckinmallard, butterbox, and common large geese were only to
be found the tide being out this mo...
