Mormon Crickets have to Invade to Survive:
http://news.yahoo.com/s/ap/20060424/ap_on_sc/mormon_crickets
Scary stuff. Were I around when the crickets were munching down on the Mormons’ first crops out in SLC, I woulda thought the coming of the Seagulls was a miracle, too. Apparently these crickets will eat their own fallen and ailing.
I never saw these when I was out there, but I swear that every footstep in the hills around SLC would send over a dozen grasshoppers flying.