What is the typical weight range specified for an adult Willow Warbler?
Answer
Adult Willow Warblers typically weigh in the range of 5 to 11 grams.
Understanding the mass of the Willow Warbler provides another data point, complementing its physical dimensions. The text specifies that adults of this species generally weigh within the range of 5 to 11 grams. This slight mass contributes significantly to its observed behaviour, characterized as energetic and almost buoyant movement through the canopy. While size comparison in the field is often unreliable due to perspective, knowing this typical mass range is informative for assessing the bird’s slight build, which is consistent with its classification as a small passerine.
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