Baltimore Orioles spend the summer in Decorah. They eat nectar, a wide variety of invertebrates, and fresh fruit. During the summer, their diet includes beetles, crickets, grasshoppers, moths, spiders, snails, caterpillars, webworms, gallworms, raspberries, mulberries, blackberries, and cherries. Although Baltimore Orioles don’t have to cope with ice and snow, they add more fruit and nectar to their diets in the spring and fall to help fuel migration.
Female Orioles weave their remarkable hanging nests from grass, strips of grapevine bark, wool, hair, and artificial fibers like twine and fishing line. They nest near N2B and the Decorah North nest, and we’ve seen them stealing nest materials from Decorah North! The nests are usually 3 to 4 inches deep, with a small opening on top and a bulging bottom chamber for eggs. Orioles lay three to seven eggs per clutch and produce one brood per year. They incubate eggs for 11-14 days and young stay in the nest for 11-14 days before fledging. To learn more, visit Cornell’s website.
Video: Baltimore Oriole at Decorah North