72 Microseasons of the Pacific Northwest

Late November marks a remarkable convergence of migrations: gray whales heading south while bald eagles arrive from the north. Approximately 20,000 gray whales travel past the Pacific Northwest coast from Alaska's feeding grounds to Baja California's breeding lagoons, passing within miles of shore at about 5 mph. Simultaneously, thousands of bald eagles from Alaska and Canada descend on Pacific Northwest rivers like the Skagit and Nooksack, drawn by spawning chum and coho salmon. Adult eagles arrive in November-December, with numbers building toward concentrations of over 1,000 birds by late December—one of the largest gatherings in North America. From coastal headlands watch for whale spouts and breaches, while along salmon rivers eagles perch in cottonwoods, feeding on spawning salmon. This dual migration creates spectacular viewing opportunities as southern-bound giants pass offshore while northern raptors settle into winter feeding grounds.

Oregon's commercial Dungeness crab season opens December 1—the most anticipated shellfish event of the year on the Oregon coast, signaling the start of winter crab season. Fresh oysters across Puget Sound, Willapa Bay, and the Oregon coast are at peak seasonal quality in cold winter water. Willamette Valley hazelnuts remain freshly available for holiday baking, and hardy brassicas (kale, Brussels sprouts) develop peak sweetness after frost.

Visit Skagit River bald eagle viewing areas near Rockport or coastal headlands for whale watching; both migrations peak during this convergence period making late November exceptional for wildlife viewing.