72 Microseasons of the Pacific Northwest

Mid-September marks the peak of the elk rut throughout Pacific Northwest mountains, with bull elk producing their full, powerful bugles that can carry for miles across valleys and ridges. These haunting calls serve to attract females, intimidate rival males, and establish dominance hierarchies within elk herds. Bulls engage in spectacular displays including antler wrestling, parallel walking, and occasionally intense fights that can result in serious injuries. The rut is energetically demanding for bulls, which may lose 20-30% of their body weight during the breeding season due to constant activity and minimal feeding. Listen for elk bugles in the Cascades, Olympics, and Coast Range, particularly at dawn and dusk when calling activity peaks. The rut typically lasts 4-6 weeks, with peak activity in mid-September tapering off by early October as bulls exhaust themselves and females become bred.

Matsutake mushrooms (*Tricholoma murrillianum*)—highly prized by Japanese-American communities and a major export to Japan—begin fruiting near ponderosa pine in the eastern Cascades and Deschutes area. Chanterelles are in full swing throughout western Oregon and Washington. Coho salmon reach peak counts in Puget Sound tributaries. Willamette Valley grape harvest is underway for Pinot Gris and Chardonnay.