Yolk steroid concentrations decline in Japanese Quail (Coturnix japonica) eggs throughout incubation
Sarah K. Winnicki, Márk E. Hauber, Ryan T. Paitz, Thomas J. Benson
The paper measures yolk steroid hormone concentrations in Japanese Quail eggs during incubation and finds they decline by Day 15, with temperature differences between incubators affecting hormone levels.
bioRxiv · Jun 2, 2025 · PreprintPhysiology