Blue wing olives are a prime trout food from fall through spring.
Blue wing olive mayflies look like tiny, greenish-gray sailboats on the water to humans, but they look like lunch to the trout on streams throughout the United States. These bugs often have greenish bodies and wings that are light gray to almost black. Blue wing olives hatch - swim to the surface of the river, split their nymphal shells and emerge as winged insects - every month of the year. The newly hatched winged insects are called duns. Blue wing olives are a prime trout food from fall through spring. This gives anglers a good chance at rising fish when few other anglers are on the water.Catch Trout During Blue Wing Olive Hatches!