About 84,300 birds crossed Lane County overnight

Lane County had a busy sky while most of the county was asleep. Cornell's live BirdCast dashboard estimated that about 84,300 birds crossed the county between Wednesday evening and early Thursday morning. At 5:50 a.m., roughly 25,300 were still in flight, heading south-southwest at about 10 mph and 3,600 feet.

This is the center of Oregon's peak fall migration period, which Bird Alliance of Oregon marks as September 19 through October 19. Many songbirds navigate at night using the stars and Earth's magnetic field. Bright, unshielded light can pull them toward buildings, where glass and exhaustion become the danger.

The practical response is small: switch off exterior, ornamental and rooftop lighting that nobody needs overnight, close blinds, aim fixtures down and choose warm bulbs under 3,000 Kelvin when replacing them. The sky already has traffic control. It mostly needs fewer confusing signs.