Injuries and high stress from the rut are major factors
with bucks dropping this early. I, myself, have never
found a 'same year' shed before early Feb., though
I've shot bucks in Dec. that have pulled off while
dragging.
A few sheds are being found around here, which concerns
me as I've still got two any sex tags to fill[

]. Here is
a link to some good information...there are some
diehard shedhunters here.
http://www.iowawhitetail.com/ubbthre...=0&Board=UBB12
This was the first shed antler I found last year. I found
the match 8 days later.