Army Cutworm Moth Migration

You may have noticed Millers (aka Army Cutworm Moths – Euxoa auxillaris) in every nook and cranny lately. They are on a migration to higher elevations in Colorado and Wyoming where they will spend the summer before returning in the fall. But did you know that they are bear food? Scientists have determined that Grizzly Bears in the Yellowstone region may eat up to 40,000 a day. I was in a butterfly gardening class last spring and we got to talking about this and one participant wondered how did they come up with that number. Someone else quipped up “Some PhD sent one of his grad students up to count!” So anyway here is a link to a video of grizzlies feasting on moths.

Leave a Reply

%d bloggers like this: