A concrete box underpass 3.05 x 3.05 m (10 feet) and 30.48 m (100 feet) long under Interstate 70 in west central Colorado was monitored for deer use during four years following its completion in early 1970. A seasonal mean of 345.1 plus or minus 133.0 (50) mule deer (Odocoileus hemionus) passed through the structure when moving to or from their summer range. A video time-lapse surveillance system recorded behavioral responses during four migration periods, spring-summer and fall in 1972 and 1973. On the basis of video tape playback of 4.450 approaches and 1,739 entrances, deer displayed three basic overt responses: look-up, tail-up, and muzzle-to-ground. The frequency of the look-up response was indicative of the reluctance of the animals to go through a structure of this size and character. The underpass was successful in permitting about 61 percent of the local deer population to migrate safely under the highway. /Author/

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  • Corporate Authors:

    Wildlife Society

    5410 Grosvenor Lane, Suite 200
    Bethesda, MD  United States  20814-2144
  • Authors:
    • Reed, D F
    • Woodward, T N
    • Pojar, T M
  • Publication Date: 1975-4

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Filing Info

  • Accession Number: 00098607
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 18 1975 12:00AM