On January 2, I wrote a post talking about some recent Mothman sightings. Mothman really never left the Ohio Valley; sightings still occur.
Mothman is said to have been spotted around the time of large-scale disasters. There are those who claim to have seen Mothman, or something similar, before the I-35 W Bridge collapse in Minnesota. This is also true of 9/11—some claim to have seen something the day of the attack and also several days prior.
It is worth noting, these type of reports came after the fact. I’ve been unable to locate any sources where unusual creatures were reported before the events. Perhaps they exist, but I’ve not found anything. That doesn’t mean the reports are not genuine, but I think a healthy dose of skepticism is in order.