The mouth of the Platte River was reached on July 21st, and the next day Lewis held a council with the Ottoes and Missouri Indians, and named the site Council Bluffs. At each of these meetings between Lewis and the Indians the white man would explain that this territory was now part of the United States, would urge the tribes to trade with their new neighbors, and then present them with gifts of medals, necklaces, rings, tobacco, ornaments of all sorts, and often powder and arms. The Indians were friendly and each day taught the white men something new. Both Captain Lewis and Lieutenant Clark had seen much of the red men on the frontier, but now they were in a land where they found them in their own homes. They grew accustomed to the round tepees decorated with bright-colored skins, the necklaces made of claws of grizzly bears, the head-dresses of eagle feathers, the tambourines, or small drums that furnished most of their music, the whip-rattles made of the hoofs of goats and deer, the white-dressed buffalo robes painted with pictures that told the history of the tribe, the moccasins and tobacco pouches embroidered with many colored beads. Each tribe differed in some way from its neighbors. For the first time the explorers found among the Rickarees eight-sided earth-covered lodges, and basket-shaped boats made of interwoven boughs covered with buffalo skins. Game was plentiful as they went farther up the Missouri River. At first no buffaloes were found, but bands of elk were seen, and large herds of goats crossing from their summer grazing grounds in the hilly region west of the Missouri to their winter quarters. Besides these were antelopes, beavers, bears, badgers, deer, and porcupines, and the river banks supplied them with plover, grouse, geese, turkeys, ducks, and pelicans. There were plenty of wild fruits to be had, and they lived well during the whole of the summer. They traveled rapidly until the approach of cold weather decided them to establish winter quarters on October 27th.