What common item weighs approximately the same as three Willow Warbler eggs?
Answer
A single penny
The physical dimensions and weight of the Willow Warbler are consistently small, a fact often highlighted by specific comparisons related to their reproductive output. The eggs produced by the female during the breeding cycle are described as small, smooth, glossy white, and speckled with reddish-brown markings. A frequently cited observation emphasizing their diminutive size is that a clutch of three of these eggs collectively weighs approximately the same mass as a single standard penny. This remarkable comparison underscores how incredibly light these individual avian units are, especially considering they must sustain the development of altricial chicks for over two weeks.
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