April 29, 1805
Meriwether Lewis

(Meeting with two bear)

... the other after my firing on him pursued me seventy or eighty yards, but fortunately had been so badly wounded that he was unable to pursue so closely as to prevent my charging my gun; we again repeated our fir[e] and killed him. ... it is a much more furious and formidable anamal, and will frequently pursue the hunter when wounded. it is asstonishing to see the wounds they will bear before they can be put to death. the Indians may well fear this anamal equiped as they generally are with their bows and arrows or indifferent fuzees, but in the hands of skillfull riflemen they are by no means as formidable or dangerous as they have been represented. ...

("grizzly bear" (Ursus horribilis) first adequantely described by our explorers.)

(Antelopes) ... in this manner my dog caught one drowned it and brought it on shore; they are but clumsey swimers, tho' on land when in good order, they are extreemly fleet and dureable. ... Capt. Clark he informed me that he had seen a female and faun of the bighorned anamal;

April 29, 1805
John Ordway

a clear pleasant morning.   we Set off eairly.   proceeded on round a bend   Saw a bay horse in a beautiful Smooth plain on the N.S. where we Saw a great quantity of wild Hop Growing [Probably "wild hyssop" observed earlier by Lewis, if so, it is Big Sagebursh, Artemisia tridentata.]    we Suppose that this horse had Strayed from Some Savages    he appeared to be a tollarable Good horse but wild.   proceeded on a Short distance.  Saw a Mountain Sheep [Bighorn Sheep; See Lewis's entry of April 26, 1805.  The party also referred to this animal as an "Ibex".] on a high Steep bluff on N. S. which had a lamb with it one man went up the bluff to Shoot them.   they took down the bluffs and ran along whare it was nearly Steep where there was a black Stripe in the bluffs     he Shot at them but at too Great a distance.   they run untill they got round the bluffs and ran in to the prarie. the coulour of the Sheep was white had large crooked horns, & resembled our tame Sheep only much larger Size & horns.  Capt. Lewis and one hunter who walked on Shore this morning.   came to us about 1/2 past 9 oClock    had killed a Whiteish bair what is called the white bair, but is not white but light coullour   we delayed untill 1/2 past 10 to git the meat on board.   then proceeded on    passed high bluffs & bottoms on each Side.  Saw large flocks of the Cabberree or antilopes and handsom bottom on S.S. also buffaloe & elk. Saw a nomber of mountain Sheep & lambs on a verry high bluffs as nearly like rough mountains  Some red ceeder in the hollows & gullies in the Mountains.   these Sheep are verry wild, and keep mostly in these bare hills or mountains    Some of these hills are red Earth resemblling Spanish brown, but the most of them are whitish & naked.  Some large Stone at the foot of the bluffs, the country back from the river is I belive is barron & no timber & Good for nothing but Game.   proceeded on     passed a large timber bottom on the S.S. Camped [Above Big Muddy Creek.] after dark at the mouth of a Small river which came in on the N.S. at a beautiful Smoth plain.   we named it little yallow River [Clark named it "Martheys river in honor to the Selebrated M.F." whose identity is unknown.]  Came 25 miles this day.--

April 29, 1805
Patrick Gass

We again set out early, had a clear morning and went on at a good rate.  This forenoon we passed some of the highest bluffs I had ever seen; and on the top of the highest we saw some Mountain sheep [Bighorn Sheep, Ovis canadensis, also "ibex" to the expedition; See Lewis's entry of April 26.], which the natives say are common about the Rocky mountains. These were the first we had seen, and we attempted to kill some of them but did not succeed. Captain Lewis, and one of the men, traveled some distance by land and killed a white bear.--  [Grizzly Bear, Ursus horriblis. The first of its kind from which Lewis wrote a scientific description.]   The natives call them white, but they are more of a brown grey.  They are longer than the common black bear, and have much larger feet and talons.  We went 25 miles and encamped on the bank of a small river, which comes in on the North side about 70 yards wide.

April 29, 1805
Joseph Whitehouse

We set out Early as usual this morning, and proceeded on; and passed in the forenoon, some very high bluffs, being much higher, than any that we had seen, since we entered the Mesouri River.  On the Top of one of the highest of those Bluffs, we saw the Animal called the Ibex, or mountain Sheep, they were in a large Flock.--

This animal is about the size of a large Buck deer,--  the Colour Grey, and has hair coarse & like that of a Goat, it ears small and its body lengthy, the horns like that of a Ram, (sheep) but four times as large.  They are very nimble, and generally are to be found on high Mountains and Bluffs, and are very Shy, and difficult to be come at.--  The Indian women that was with us, inform'd us that those animals were very common to be found On the Rocky mountains.--  Captain Lewis, and one of the hunters, went out a hunting for a short time, and killed a Bear which they brought to the Pettyaugers   This Bear was of a Yellow brownish colour, and had prodigious large Claws, and <are> is what is called the White Bear by the Natives; We continued on our Voyage, & in the Evening, we encamp'd on the bank of a River, which emtied itself into the Mesouri on the North side, which is 70 Yards wide & by our Officers called Martha's River, having come 25 Miles this day.