The Collaborative International Dictionary of English v.0.48:

Killdee \Kill"dee`\, Killdeer \Kill"deer`\, n. [So named from
   its notes.] (Zool.)
   A small American plover (Charadrius vociferus, formerly
   Aegialitis vocifera) of inland waters and fields having a
   distinctive cry. The adult has two black bands around the
   neck and upper breast, but the young chick has only the
   breast band. It ranges from Canada to Mexico and the West
   Indies.

   Syn: kildeer, killdeer plover, Charadrius vociferus.
        [1913 Webster + WordNet 1.5]

   Note: It is dark grayish brown above; the rump and upper tail
         coverts are yellowish rufous; the belly, throat, and a
         line over the eyes, white; a ring round the neck and
         band across the breast, black.
         [1913 Webster]

WordNet (r) 3.0 (2006):

killdeer
    n 1: American plover of inland waters and fields having a
         distinctive cry [syn: killdeer, kildeer, killdeer
         plover, Charadrius vociferus]

U.S. Gazetteer Places (2000):

Killdeer, ND -- U.S. city in North Dakota
   Population (2000):    713
   Housing Units (2000): 351
   Land area (2000):     0.947235 sq. miles (2.453327 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.947235 sq. miles (2.453327 sq. km)
   FIPS code:            42700
   Located within:       North Dakota (ND), FIPS 38
   Location:             47.370081 N, 102.755046 W
   ZIP Codes (1990):     58640
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Killdeer, ND
    Killdeer