I think it really depends on where you are. Even within their range, in some places they've been wiped out from pesticides, or tree removals, or got their signa

I think it really depends on where you are. Even within their range, in some places they've been wiped out from pesticides, or tree removals, or got their signals mixed up and emerged early/will emerge late. I can say that I was in Silver Spring, MD for Brood X in the spring of 2004, and for a few days you couldn't take a step without squishing 20 cicadas. Trees looked like you had dropped acid because they were literally covered >50% of their surface area in wiggling cicadas. I started carrying an umbrella because I would be picking them of of myself for a half hour from the mere 20' walk from my car to my front door.