For the Birds Radio Program: Orioles
Today Laura Erickson talks about a vivid orange bird named for Lord Baltimore. 3:44 (Reworked from May 12, 1995)
The sweet and joyful song of the oriole provides luscious background music as April turns into May in the Northland. The only thing rivaling oriole music is the oriole’s plumage, luscious, tropical orange, brilliant as sunshine, and set off to perfection with gleaming black on head, back, and wings. In extremely rare cases, orioles lack yellow pigment, and their feathers are brilliant scarlet–one of the most beautiful of all natural oddities.
Orioles love apple orchards, and so early European settlers quickly took notice of them, calling them the “fiery hang-nest.” In Maryland, this bird that carried the colors of the Lords Baltimore was quickly nicknamed the “Baltimore-bird.” Early American ornithologist Thomas Nuttall wrote that they seemed “like living gems intended to decorate the verdant garment of the new-clad forest.” Another ornithologist, Alexander Wilson, heard in the oriole’s song “the pleasing tranquillity of a careless ploughboy, whistling merely for his own amusement.” Henry David Thoreau translated the song of Walden orioles as “Eat it, Potter, eat it!”
The rich tonal quality of oriole whistles is difficult but not impossible for humans to imitate. Even though the oriole’s song is a rather short and simple tune, each male has his own personal melody. I used to be able to watch orioles by the dozen when I lived in Madison, Wisconsin, and birded every spring and summer morning on Picnic Point on Lake Mendota. I quickly learned to recognize individual orioles by their songs. They listen to one another, and then make their own variations on the local song theme, so it becomes an easy matter to recognize visiting migrants from local birds by their songs. Recordings of oriole songs are perhaps the most misleading of all bird recordings because of this extreme variability.
The first orioles of spring are easily attracted to oranges, and hanging orange halves from a deciduous tree or setting them on a platform feeder can lure these golden birds in for a pleasurable viewing experience. As spring progresses, orioles will tire of citrus, but will continue to come to feeders for sugar water or grape jelly.
Orioles prefer nesting in elms to other trees, though in Minnesota they’ve also long selected birches. As elms and birches succumb to disease, many orioles have adapted to other species. They build their exquisite purse-shaped nest near the tapered tip of a branch, where squirrels and crows can’t quite balance, and although the nest may sway dramatically in a wind storm, it is strongly woven and holds together amazingly well. Although orioles do winter in the tropics, they seem to actually prefer slash to mature forest down there, and overall, their numbers haven’t declined as greatly as other tropical migrants over the last twenty or so years, but they’re still well below their numbers of the 1970s. A spring day without orioles would be a day without sunshine indeed.