What’s the precision of individual cicadas being able to follow their regular timeline? Like if 10,000 cicadas in one area are in a 13 year cycle how many will accidentally wake up before then?
I can’t give you any hard numbers but enough of the 2024 brood was definitely noisy last summer in Chicago.
The major brood here, XIII, has a sub-brood that shows up 4 years ahead of time. 2020 was very noisy.