Blood circulation and the flows of heat in an incubated egg.
At the start of incubation, heat flows through the egg by conduction only. During incubation, the embryo's developing circulation should augment conduction in the egg, distributing heat from the brood patch more uniformly through the egg. The augmentation of heat flow through the egg should be very small in small eggs, but should be larger in large eggs.
D000818:Animals; D001717:Birds / Q000196:embryology*; D001775:Blood Circulation; D002642:Chick Embryo / Q000502:physiology*; D003202:Computers, Analog; D004625:Embryo, Nonmammalian / Q000502:physiology*; D006358:Hot Temperature; D008954:Models, Biological; D013696:Temperature; D013814:Thermal Conductivity