Catching a glimpse of eggs and baby birds in backyard nests is always a treat this time of year. But on occasion, an odd egg may show up that does not match the others. In the eastern U.S. that odd-looking egg was placed there by a Brown-headed Cowbird. Known as a brood parasite, this common native species relies on other birds to incubate and raise their young, often at the expense of their own brood. My good friend John Lipscomb found a cowbird egg in one of his Bluebird boxes and inspired this story.
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