“They're fugitive entities; you might see one only once in your life”
“They're fugitive entities,” says Tom Bigelow. “It rains and they're out for a couple of days and they're gone. They might come out one year, and for whatever reason—it's too cold or warm or too wet or dry, and they don't come out. You might see one once in your life.”
For the record, he’s talking about mushrooms.