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Ongoing Montane Bird Irruptions in Fall 2026 - American Birding Association
Late summer and early fall mark the time when birders in western North America start turning up records of montane birds moving into non-breeding habitats and descending into nearby lowlands. Fall of 2026 is shaping up to be another invasion season for a few montane species, especially a couple corvids, which are engaging in widespread movements. Here, three montane species are highlighted, a few others are mentioned, and we encourage you to provide details and documentation when observing wandering bird