buck fever

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Nervous excitement felt by a novice hunter at the first sight of game.

from The Century Dictionary.

• noun Nervous agitation of a hunter upon the approach of deer or other large game. Also called buck-ague.

from the GNU version of the Collaborative International Dictionary of English.

• colloq. Intense excitement at the sight of deer or other game, such as often unnerves a novice in hunting.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun idiomatic Excitement and nervousness felt by a new hunter upon seeing game.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun nervous excitement of an inexperienced hunter