It may be, however, John Green's database up to the year 2000 has 42 reports that span most of the summer and fall months with a couple in the spring starting in March. Could be time for a really deep look at all the parameters of those reports to see if there's any commonality. Especially where Google Earth terrain studies are concerned. That and the positions of any mines or caves close by to those reports. Authorities placing bars over such entrances may be more involved that simply keeping people safe or away from bats. It might be another way agencies are channeling the creatures away from some areas and into others by not allowing Sasquatches places of refuge from weather like winter, or locations for birthing? Could be a long investigation for one person but I don't think it has ever been done.