Loons begin their southern migration in large groups.
Kildeer begin their southern migration from BC.
Departing migratory birds include Virginia Rail, Caspian Tern, Vaux's Swift, Rufuous Hummingbird, flycatchers, Western Wood-Pewee, Purple Martin, Tree Swallow, Swainson’s Thrush, Common Yellowthroat and Western Tanager.
Golden-crowned Sparrows and Ruby-crowned Kinglets arrive.
Dark-eyed Juncos (Oregon form) become more common on the ground beneath feeders.
White-crowned and Golden-crowned Sparrows are seen on the ground beneath feeders as they migrate.
Quaking Aspen leaves begin to yellow and drop.
Mule Deer are shedding the velvet from their antlers.
Bats are busy feeding, building fat for hibernation and migration.