Listening for Worms
Dozens of robins have been in my backyard this past week. On the one hand, robins are frequently seen throughout the winter here. Several years ago, I posted an image of a robin perched in a tree in our backyard during a snowstorm. But now they are down on the ground, pausing for a moment, and then scurrying to another place just a foot or two away, pausing, and moving again. Robins search for their food source using visual, auditory, and olfactory senses. Experiments have demonstrated that they can find worms underground just by listening. Their numerous appearances suggest to me that the ground is warming and a variety of bugs and worms are moving through the topsoil and attracting the robins. Maybe it's another sign of an early spring.
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