MacCulloch's Forester peaks along the protected 49th parallel

July 11, 2026Northwestern Glaciated Plains

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, a threatened clearwing of rocky outcrops, is at peak flight across this landscape — tracing a corridor that the Peace Park was founded in 1932 to protect. The timing is significant: this and earlier sightings align with a season of strong emergence across the boundary region.

Alongside the threatened milkvetches that flower in June and now on the wing, these moths signal a landscape still holding — one where specialized herbivores and their host plants persist in enough abundance and quality to sustain their cycles. In a region where development and climate pressure mount steadily, that persistence matters.

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