Transactions
of the Azov-Black Sea Ornithological Station
Branta Cover Language of the article: Russian Cite: Mitiay S, I. . (2009). Modern approach to description of volume and surface area of bird eggs. Branta: Transactions of the Azov-Black Sea Ornithological Station, 12, 148-156 Keywords: egg, surface area, relative spatial index, volumetric index Views: 488 Branta copyright Branta license

Branta Issues > Issue №12 (2009)

Branta: Transactions of the Azov-Black Sea Ornithological Station, 148-156

Modern approach to description of volume and surface area of bird eggs

Mitiay I.S.

The computer-based method of egg volume and surface area estimation is described. The analysis is performed by digital photographs of eggs with the help of piecewise continuous (smooth) curve equations. The following indices are suggested: the relative volumetric IrV=Vov/Vsph, or IrV= 6k/¶*(D/L)2; the relative surface IrS=Sov/Ssph,orIrS=(ks*kv*L*D2)/(4¶(L/2)2)= =(ks*kv*L)/¶, where IrV и.IrS are indices, Vov , Sov ,Vsph , Ssph  - volumes and surface areas of real eggs and spheres of diameters equal to egg length; ks, kv are empirical coefficients.

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