Let’s start with the fact that it’s a small, brown bird (not everything in these quizzes will be birds). The size and color limits us to sparrows, wrens, creepers, and that’s about it. Sparrows all have thicker bills and creepers are almost always found on tree trunks and not on little twigs (besides being thinner, having a more patterned wing, and shorter legs).
So, among the wrens, there’s 4 known from Waltham: Carolina, House, Winter, and Marsh.
Carolina’s a very differently colored bird with a big eyestripe. Marsh Wrens are paler
below and also have a prominent eyestripe. House and Winter Wrens are similar, but
Winter has a much shorter tail. It’s also much more likely to be found in Waltham in
January (according to Birds of Massachusetts, Winter Wrens are regular overwinterers
and House Wrens only very occasionally in the southeast and the Cape).
So, a Winter Wren. In Waltham, I’ve only had them at Met State, although I’ve had them
pretty regularly there. I’ve also heard about records around Prospect Hill and at least one
Since I haven’t made any announcements of this quiz, I got no responses.