13 Crows

Riley and I went to the oval yesterday for a change of pace. I needed somewhere to walk that there was a path. It's wet everywhere all the time, and all the grasses have seeded. Icky. We went down and the oval had been slashed (at least some parks are getting cared for - everything else is badly overgrown - hence my desire for the paths. Although it does shit me a bit that even though there's no sport on it's still the sport field that gets first attention, not any recreational area. On the other hand, as I seem to be the only person walking for recreation, I can understand that it's too much to ask for an appreciative audience of 1).
Anyway. The grass hadn't been collected, just left there in huge clumps (don't start me) and there was a lot of crows strutting all over the place, cawing, pecking at clumps and generally behaving in a slightly gang-like manner. I know that in Europe there are all kinds of omens indicated by Ravens, their number and their activity. I wonder, are Ravens as common as crows? Everyone would be having omens left right and centre.
So I counted the crows and there were 13. "ooooh" I thought, "that might not be great...." but there were definitely 13, no getting around it, until shortly a whole nother gang flew in and then there were 23 or 24. It was hard to count them while they were milling around and really going for one particular large grey clump (which I was happy to continue supposing was just wet grass and not a rabbit). What kind of omen might this be? Abundance? Being beset by an overwhelming number of enemies? Don't be a rabbit under a slasher?
It remained unclear.
Riley and I did our two circumnavigations and got out of there. Afterall, what good are omens you don't understand when Breakfast is waiting?