White-Throated Sparrow Digs Up Central Park
Rustle rustle rustle.
Who’s that walkin’ around here?
Sounds like baby patter.
Baby elephant patter, that’s what I calls it.
– Fats Waller, Your Feet’s Too Big
Ah, it’s a White-throated Sparrow, digging through the leaves for tasty morsels hidden below.
Beautifully camouflaged in the ground litter, the sparrow nonetheless called attention to itself by kicking up an absolute ruckus. If you’ve never seen a little bird dig, it’s quite an impressive flurry of activity with wings, feet and beak all in motion at once.
White-throated Sparrows have two color morphs, the striking white-striped bird above, and a subtler tan-striped variation.
Here’s what Cornell Lab of Ornithology’s “All About Birds” website has to say about the color morphs:
The two forms are genetically determined, and they persist because individuals almost always mate with a bird of the opposite morph. Males of both color types prefer females with white stripes, but both kinds of females prefer tan-striped males. White-striped birds are more aggressive than tan-striped ones, and white-striped females may be able to outcompete their tan-striped sisters for tan-striped males.
Okay, got that?
Here, take a quick look at The Sordid Lives of the White-Throated Sparrow, Kelly Rypkema’s one-minute video:
After mating with whichever-striped chosen consort, White-throated Sparrows build their nests on or near the ground, which makes the eggs and nestlings easy prey for that most adorable of vicious predators, the Eastern chipmunk.
Yes, these cute little rodents don’t confine themselves to nuts and seeds. In fact, they are notorious nest-raiders of ground-nesting birds, helping themselves to a quick blast of protein in the form of eggs and babies. Interestingly, a 2011 study indicates that some species of ground-nesting birds, notably oven-birds and veeries, pay attention to chipmunk calls and avoid nesting in chipmunk-rich areas.
I don’t know if the White-throated Sparrow eavesdrops on chipmunks. But watching them dig up the leaves, I’d think they could put up quite a defense with those wings and feet. And speaking of feet (hey, sometimes a good segue is elusive, okay?), here is Fats Waller singing “Your Feet’s Too Big.”
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