Question: People always talk about American Robins being a sign of spring, but sometimes I see the birds year-round. And recently I learned that many robins don't even migrate. What gives?

KK: It happens every year. Between February and April, in birding listserves or on social media, some people will happily announce that they just saw their “first robin of spring.” And every year, others will respond by saying there’s no such thing, that robins are present at all seasons and that they shouldn’t be regarded as signs of spring.