On several occasions, the captains mention the log cock, later identified as the western pileated woodpecker.
Capt. Lewis, March 4, 1806--The large woodpecker or log cock, the lark woodpecker and the small white woodpecker with a read head are the same with those of the Atlantic states and are found exclusively in the timbered country.
Capt. Lewis, April 5, 1806--Saw the Log cock, the humming bird, gees ducks &c. today.
Capt. Clark, April 5, 1806--Saw the Log cock, the humming bird, Gees Ducks &c. to day.
Capt. Lewis, July 1, 1806--the dove the black woodpecker, the lark woodpecker, the logcock, the prarie lark, sandhill crain, prarie hen with the short and pointed tail, the robin, a speceis of brown plover, a few curloos, small black birds, ravens hawks and a variety of sparrows as well as the bee martin and the several speceis of Corvus genus are found in this vally.