Below is a link to the DEC page to educate hunters wishing to use a crossbow

to hunt big game in NY State.

The information mentions that the crossbow may be used in the early bear season, as well as the regular
and late muzzleloader seasons.
The early bear season begins Sept. 17th this year.
HOWEVER, the Sept. portion of the season is in the 2010 license year.
The crossbow may be used beginning the 2011 license year, October 1st.
The early part of Oct. also overlaps the Archery season.

At the bottom of the DEC page there is a "certificate" that must be completed and carried by all hunters
using a crossbow.