Late August brings the beginning of elk (Cervus canadensis) rut in Pacific Northwest mountains, with bull elk starting their practice bugles in preparation for the intense breeding season ahead. These tentative calls echo across mountain meadows and forests as bulls test their voices and begin establishing dominance hierarchies. The full rut peaks in September, but August marks the transition from bachelor groups to competitive breeding behavior. Simultaneously, Olympic marmots begin entering hibernation, retreating to underground burrows where they'll spend the next 7-8 months in torpor. This dramatic difference—elk becoming increasingly active and vocal while marmots disappear entirely—illustrates the diverse strategies Pacific Northwest mammals use to survive seasonal changes. Listen for elk bugles in the Cascades, Olympics, and Coast Range, while marmot colonies in Olympic National Park fall silent as animals vanish into their alpine dens.