The butterflies, incidentally, here in South Texas are dead. They fly a few days and fly through mostly vehicle grills and I am genuinely surprised at any making it to Mexico if they do. They're super tiny and each year that 'swarm' dwindles, there's just not enough of them anymore with the climate change. It's too bad but off topic, that's just something that happens here with their migration and if we see more than 10 in a season, that's a lot. If they're swarming, I would think it would be in the countryside not in the city, at least, we don't see a lot of them.