And still another study that shows how important it is to keep the circadian (which, in turn, feeds the circannual) cycle on track for our birds! They now discovered that the 'clock' that governs cell regeneration (think aging, healing, overcoming disease, etc) and the circadian cycle are, or should be, in sync! But because this was not the actual purpose of the study, they need to do more research.
https://www.zmescience.com/science/the- ... -242789930