The Effect of Shape on the Surface-Volume Relationships of Birds' Eggs

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Abstract
The surface areas and volumes of 29 birds'' eggs were determined with the aid of a computer, and a new accurate method of measuring volume by water displacement was developed. The relationship between shape and surface area was studied with the aid of a newly defined parameter, the surface-volume index (Ki). The relation between surface area and volume found in the present study corresponds closely with that of Paganelli et al. (1974). The use of either equation may lead to estimated surface areas in error by nearly 4%. This error can be reduced by using the relationship established between Ki and elongation, an easily determined specifier of egg shape.

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