European Skippers Flying in Fields
Roughly one-third of all butterfly species in North America belong to the Skipper (Hesperiidae) family. Most species possess stout bodies, wide heads and relatively small wings. An early morning walk from mid-May to mid-July through almost any field (especially one with lots of Timothy grass, which the larvae eat) will result in a flurry of tiny orange-brown wings rising into the air. It is likely that the butterflies stirred up are European Skippers (Thymelicus lineola) which roost at night on grass stalks. During the day they feed on the nectar of a variety of low-growing field flowers, including Orange Hawkweed, thistles, Ox-eye Daisy, Fleabane, White Clover, Red Clover, Selfheal, Deptford Pink, Common Milkweed, Swamp Milkweed, Dogbane and vetches. These abundant butterflies were accidentally introduced into Ontario, Canada in 1910, and their range has been expanding ever since.
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