What acrobatic maneuver does the Willow Warbler use, interspersed with gleaning?
Answer
Brief hovering spells
In addition to actively gleaning insects off surfaces, the Willow Warbler employs brief hovering spells during its foraging behavior. This acrobatic ability allows the bird to stop momentarily in mid-air, providing the stability needed to snatch resting insects from precarious locations, such as the underside of a leaf or the tip of a twig that might otherwise be out of reach from a fixed perch. This distinguishes their agile foraging style.

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