In winter, many songbirds join flocks made up of multiple species that travel around looking for food, benefitting from safety in numbers. But a bird flock that doesn't move in the same direction soon scatters to the wind. It turns out that the Tufted Titmouse, a small gray songbird, is often the one leading the flock. Researchers studying the flight paths of flocks found that the paths taken by the titmice best reflected the direction of the group as a whole, compared to other species in the group. This was especially true when the flock moved quickly between sites, when staying organized is key.

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