Even though it was chilly and overcast yesterday, the backyard was humming with visitors.
While the Yellow-rumped Warblers swarmed the suet feeders (as many as 8 on the feeder at one time), the Baltimore Oriole and his girlfriend (?) monopolized the oranges, a Least Flycatcher, a Swainson’s Thrush, and an Ovenbird perched near the garden hunting the dead mealworms I had thrown there, and an Indigo Bunting and a pair of Rose-breasted Grosbeaks tapped into the seed feeders. It was hard to get anything done while looking out the window every couple of minutes.
Like other small songbirds, Indigo Buntings migrate north in the spring at night, using the stars to navigate their way. You can read more about how their navigational abilities were discovered in an earlier blog post.
Ovenbirds are grouped with the Warblers, but they certainly don’t act like them. Instead of flitting around in the tree tops, these little birds search through the litter of the forest floor picking up small insects and other invertebrates. They might be hard to spot among the dense vegetation of the forest, but their loud, repetitive call, “tee-cher, tee-cher, tee-cher” alerts you to their presence. The female weaves a globe of grass and twigs, kind of resembling a Dutch oven, for her nest — hence their common name.
More often heard than seen, Swainson’s Thrush can be really difficult to locate in a dense forest as they hide behind vegetation and face in several different directions to sing. Territorial males can get so antagonistic toward each other, they engage in a sing-off, each producing louder and louder cascades of flute-like sound, spiralling up or down the scale.
Part of the reason so many birds are congregating in the backyard right now is because of the delay in warm spring weather in the upper Midwest. Early, mid, and late arriving migrants are stacked up here, waiting for that warm front from the Gulf that will carry them north on the final leg of their migration. Meanwhile, I feel like I’m back in the tropics, with a huge diversity of birds flitting around in the backyard. Most likely, that will end soon.