Shedding is affected by photoperiod, nutrition and genetics all of which affect the hormone balance that triggers shedding. Most in the rockies will start losing antlers in mid to late February, but others in the same area could drop in January, while others won't drop until mid March. They don't normally shed both sides at exactly the same time, which is why it is rare to find matching sets. But they will shed within about 2-3 days of each other.
Yes it means the length of daylight. Nature uses photoperiod to trigger many seasonal reactions, rather than just weather, as a cold or hot, or wet, or dry spell could be disastrous if that was a plant or animal's sole indication of when to rut, drop leaves, produce seeds, drop antlers, grow a new coat of hair, shed current hair, etc.
All of us, at one time or another have gone on a hunting trip and had what we call “Blue Bird” weather. Warm evenings and almost hot days. We hunt in our t-shirts and enjoy the sunshine. We are way up in the mountains and have a whole week to hunt. How could it get any better?
That is, until we score on that big buck or bull. We work to get it out of the field and skinned as quickly as possible to cool it down. But try as we might, we just can’t get...