Rare 2nd breed

Commonly, the Small Tortoiseshell has a single breed each year. Due to the location of Finland the species only has a 2nd breed in years with good weather conditions.

After two bad years the Small Tortoiseshell has declined in population. In 2015 I hardly spotted this butterfly at all. In summer 2016 the species has taken a great leap back. Early summer the first breed turned to adult butterflies. They were flying in large numbers. But that’s not all. Recently, I’ve noticed a high number of caterpillar nests, too. During a check at a farm I noticed caterpillars in almost all instars. This means a 2nd breed will continue to grow the population this summer.

It’s one of the most common butterflies. Nevertheless, it’s always a pleasure to take a close look at the beauty of this “ordinary” insect.

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