Did you already see this Comstock article? Excerpt mentions INaturalist :
We’re going to have a lot more of a picture around the end of the month (October),” Pelton says. “Based on what we’ve been seeing just on iNaturalist — which has really become the best way to look at comparing year to year — the late summer and early fall actually look better than they did last year, so we’re starting to feel cautiously hopeful that we’re going to be above the really low numbers we saw last year.”