Here’s when Miller moths will start to swarm in Colorado this year

By Spencer McKee | Denver Gazette

This past weekend, I made the mistake of leaving the door open while I was heading in and out of my backyard with the pup – and sure enough, I noticed an intruder had snuck its way inside as I locked up for the night. Thankfully, it wasn’t one of the neighborhood bears or a local bobcat – but an old familiar friend.

High on my wall was a Miller moth. And just like that, I was reminded that the season when Colorado gets swarmed by hoards of the winged species is soon to be underway.

According to Colorado State University, Miller moths tend to appear along the state’s Front Range region sometime between mid-May and early June, hatching in the Eastern Plains and starting a migration to higher elevation parts of the state over the next two to three weeks, or up to six weeks on years where an ‘outbreak’ occurs

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