Every year the weather conditions vary and each season the conditions seem to be perfect for something! Sometimes it's nasties like locust swarms or harlequin bug infestions. Maybe it's the germination of blackberry seeds dropped by birds (blackberries are a noxious weed in Australia). Last year we had an incredible crop of blood plums, this year the raspberries are in abundance.
We also have something this year that I don't ever recall seeing before. Thousands and thousands of butterflies! Everywhere we go we see them, not just a few at a time but dozens of them fluttering around. We seem to drive through clouds of them. What an amazing sight.