Note 5 — THE NUMBER AND CONDITION OF THE NATIVE RACE IN OREGON WHEN FIRST SEEN BY WHITE MEN.
Reading edition
The writer has observed this instinct manifested one season by wild ducks. The oak trees in the vicinity of his residence south of Salem, of which there were considerable areas, bore a heavy crop of acorns. The wild ducks by some means found it out, and must have by some means informed each other, as the flocks of them passing over my farm from a large beaver dam pond, where they rested at night, to their feeding grounds daily rapidly increased from day to day, and as rapidly decreased when the supply of acorns was consumed.