As part of an extensive bioenergetics study of bobwhite quail (Colinus virginianus), energy requirements for egg laying were determined. Caloric values for eggs averaged 5.489 kcal/g. Net energetic efficiency of converting productive energy into eggs was conservatively estimated to be 54% for quail laying at a rate of 0.45 egg/bird-day at 25 C. Assuming that those values were the same for quail laying a 10-g egg at a rate of 1 egg/bird-day resulted in an energy requirement of 69.645 kcal/bird-day. This is an energy demand equivalent to that of existence alone at about -3.3 C
Case, Ronald M.
"Energetic Requirements for Egg-Laying Bobwhites,"
National Quail Symposium Proceedings: Vol. 1
, Article 26.
Available at: http://trace.tennessee.edu/nqsp/vol1/iss1/26