I don't believe in omens, but I pay attention to what shows up repeatededly (beyond relevance or confirmation bias). I think I am likely to think more in terms of negative connotation if higly symptomatic.
But I have had many things I can't explain, whether simply coincidence or not. I would never say I could control them, but sometimes they're too frequent or strange to ignore. Like when my dog (associated in life, with a Robin, always-even jokingly) died, and I was sitting in the grass crying and a robin came up right beside me and sat close to me, and didn't move, and stayed for ages. Little things like that. Helped me, anyway, was consoling.
I kind of believe like St. Patrick said about dreams, or St. Francis (I think?) about signs (signs being directional), "Not all mean something, but not all mean nothing".
I would consider the bat a happening, a way to practise dealing with a problem, and how you view it, and maybe an opportunity to get whatever needs to be, sealed up.
Ugh- bat!!! Never even seen one, live! ?? (Hope never to! :laugh: )