GeoCAS Citizen Science.

Deer Mapping

White Tailed Deer mapping


Welcome to White Tailed Deer mapping in the Virgin Islands.

White Tailed Deer are an example of an exotic species brought to the Virgin Islands by Europeans for sport. They arrived on the Virgin Islands in the middle 1800's and have spread between the large islands and nearby cays by swimming. Deer are herbivores that can have dramatic effects on vegetation when their populations are very large. In recent decades populations have been low because of the increase in cars, a major source of deer mortality, and predation by humans. In the 1940's there may have been as many as 3,000 on Saint Croix. We are trying to document where deer in the Virgin Island are most often seen in order to estimate population size and location. Please help us out by adding a point whenever you see them.

To add a point to the map:

  • Navigate the map so you can clearly see the place where you want to place a point on the left hand side of the map.
  • Click on the icon with a pencil at the top left of the map window. Choose any of the icons in the window that appears.
  • Click on the map at the location you want to add a point.
  • Choose answers to the questions in the popup window by clicking on one of the options for each question.
  • Click somewhere else on the map to save the information. Click back on the point to add an image if you have one.
  • If you want to see what was entered for other points in the map you can click on them in the map.
  • If you are having trouble with the size of your screen you can open the map application in a new window by clicking here .