Lots of ladybugs in the house today, and I read that they're getting in through the windows, so I went to inspect. One window in particular has a large gap at the bottom. All of the windows on my house are not caulked in that spot, although some have almost no gap.
Bottom of window (that's a metal sill on the bottom):
I also noticed that all windows have a gap at the top as well (also, what about the vertical gap the orange arrow is pointing to?):
It's really weird to me but since ALL the windows are missing caulk in those spots, I'm thinking maybe there was a reason they weren't caulked? Should I leave them alone? I am not very well-versed in windows, so forgive my terminology (if anyone can point out to good resources, would be appreciated)