Wildlife
Brewer’s blackbird
Euphagus cyanocephalus
Photo: Wikimedia Commons via Wikipedia
Habitat
Great Falls
Conservation
Secure
First Observed
1805-06-24
Lewis noted many large and small blackbirds at Great Falls. May have included this common bird of the Northern Plains.
Recent sightings
Where it’s being seen today
8 research-grade iNaturalist observations between 2023–2025. Most recent: 2025-09-08. Sourced from Terrain360 trail captures, cached locally.
Journal References
12 journal entries mention Brewer’s blackbird
Jun
6
1804
Missouri River near Osage River — Patrick Gass: June 6, 1804
...
and the current very strong. Three miles further we passed
Blackbird creek on the north side, and encamped. This day
going round some drift wood, the stern of the boat ...
Jun
9
1804
Clark: June 9, 1804
...ds in the Praries
on the L. S. passed a Small Creek Called Blackbird Creek S. S. and One
Islands below & a Prarie above on the L. S. a Small Lake above the
Prarieoppo...
Jun
9
1804
Missouri River near Jefferson City area — Patrick Gass: June 9, 1804
...
and the current very strong. Three miles further we passed
Blackbird creek on the north side, and encamped. This day
going round some drift wood, the stern of the boat ...
Aug
11
1804
Missouri River near Little Sioux River — Patrick Gass: August 11, 1804
...on a
pole, which had been set up at his grave. His name was
Blackbird, king of the Mahas; an absolute monarch while
living, and the Indians suppose can exercise the powe...
Apr
14
1805
Lewis: April 14, 1805
...and grass, open at top, and much in the stile of
the large blackbird comm to the U States. the egg is of a bluish brown
colour, freckled with redish brown spots. one o...
Jun
8
1805
Lewis: June 8, 1805
...obbin, turtle dove,
linnit goaldfinch, the large and small blackbird, wren and several other
birds of less note. some of the inhabitants of the praries also take
reff...
Jun
15
1805
Clark: June 15, 1805
...it was now
late, we Saw great numbers of Gees Ducks, Crows Blackbirds &c Geese
& Ducks with their young. after Landing I detached Joseph Fields to
Capt. Lewis to let ...
Jun
25
1805
Lewis: June 25, 1805
...e pepper mint very much in taste and
appearance. the young blackbirds which are almost innumerable in these
islands just begin to fly. see a number of water tarripens....
Jul
9
1805
Lewis: July 9, 1805
...morning was fair and pleant. the Islands seem
crouded with blackbirds; the young brude is now completely feathered and
flying in common with the others. we corked the ...
Mar
3
1806
Clark: March 3, 1806
...t has been previously discribed.-.
The Crow Ravin and large Blackbird are the Same as those of our Country,
only that the Crow here is much Smaller, yet its note is the...
Mar
3
1806
Lewis: March 3, 1806
...ant has been previously discribed.The
Crow raven and Large Blackbird are the same as those of our country only
that the crow is here much smaller yet it's note is the ...
Sep
18
1806
Missouri River through Kansas-Missouri area — Patrick Gass: September 18, 1806
...ing party, 276
Bighorns, see Mountain sheep
Birch, 166, 222
Blackbird, king of Mahas, 19
Black-bird creek, 7
Blackbirds, 104
Blue-water creek, 10
Blustry point, 177
Boat...