No Shingles, No House

Day 201: In areas where the two species occur together, there's an easy way to remind yourself of the difference between Purple Finch and House Finch: if it doesn't have shingles, it's not a house. The breast markings on House Finch are distinct flecks, as opposed to the soft, blurry, muted pattern worn by Purple Finch. Otherwise, the two birds look pretty much the same, or as Roger Tory Peterson puts it, "like a sparrow dipped in raspberry juice." The females of both species are even more difficult to distinguish, with both being your typical "little brown job" or "LBJ" as they are lovingly known in birding circles. A trained eye can pick out narrow wing bars on a female House Finch (not as well-defined on Purple) or on Purple, a straighter culmen (dorsal ridge of the bill) than on House, but you'd better have good field glasses and hope for a quiet subject if you wish to make either of these observations.