They are fast fliers and difficult to observe.
Adult P. machaon are rarer than their larvae.
For more detailed informations on its occurrence in the area see
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The larvea can often be found feeding on Umbelliferae.
When being attacted it can show orange coloured antlers.
Despite their brilliant colours, caterpillers can be hard to find. They overwinter as pupae.
Detailed information on the quantitative occurrence of the species by year and during the season can be found here.