The Collaborative International Dictionary of English v.0.48:

Buck fever \Buck fever\
   Intense excitement at the sight of deer or other game, such
   as often unnerves a novice in hunting. [Colloq.]
   [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

buck fever
    n 1: nervous excitement of an inexperienced hunter

Moby Thesaurus II by Grady Ward, 1.0:

23 Moby Thesaurus words for "buck fever":
   agitation, apprehensiveness, attack of nerves, case of nerves,
   excessive irritability, fear, fidgetiness, fidgets,
   morbid excitability, nerves, nervosity, nervous stomach,
   nervousness, panic, panickiness, spell of nerves, stage fright,
   state of nerves, tic, trepidation, twitching, uneasiness,
   vellication