Deer lose their antlers every single year but do you know why?
Deer and other ungulates shed their antlers once a year. It can take as little as 24 to 48 hours for the antlers to actually fall off, but the shedding process takes between two to three weeks and then new antlers will regenerate throughout the summer.
Deer shed their antlers anywhere between January and April, sometimes earlier or later depending on the age of the deer, the physical condition it is in, and where it lives.
How They Shed
Deer antlers are made up of a honeycomb, bone-like tissue. The mounting point where the antlers attach to the head is called the pedicle, where they break off.
During the summer, the antlers grow fast for about two to four months. High levels of testosterone slow the growing speed and the veins and arteries around the velvet cut blood flow and nutrition supply to the antlers. The velvet encasing the antlers withers and falls off with the help of deer rubbing their antlers on trees.
After their antlers are fully-grown again, a drop in testosterone levels causes weakness at the pedicle. The pedicle becomes so weak the antlers simply fall off.
Why They Shed
The drop in testosterone levels happens after rut. The dropped hormone level activates specialized cells called osteoclasts. These cells eat away at the pedicle resulting in deer antlers to become weak and that’s why deer shed their antlers. This process does not hurt the deer.
Some deer shed their antlers earlier or later than normal depending on different factors. Wounded or injured deer usually cast their antlers earlier than normal because injuries activate the osteoclasts cells early. The same situation goes for deer with declining physical conditions.
Deer that are in good condition, live in a mild climate, and have a high quality habitat will keep their antlers well into the spring months. Deer with poorer conditions, live through harsh winters, and have limited nutrition based on their habitat will shed their antlers earlier.
Sometimes a late season hunt can result in a trophy with no antlers because antlers have already been shed. So before you pull the trigger, look for any red, raw, or scabbed over areas on either side of the forehead to determine if you are shooting a buck that has already shed his antlers.
As for springtime, head out in the woods to see if you can find antlers deer have shed or any deer re-growing their rack for hunting season.