Data and Diagrams From Bat Studies

Table 1 - Collisions fatalities through out sampling period. (Erickson et al, 2003)

Table 2 - Bat mortality estimates at U.S. wind plants (Erickson et al, 2003)

Chart 1 - Histogram depicting total number of bat calls for all towers and detectors in south-central Pennsylvania, gathered from one-half hour before sunset and one-half hour after sunrise from August 1 to November 1, 2005. (Arnett, 2006)

Table 3 - Total number of bats and bat species fatalities discovered at the Mountaineer Wind Energy Center from July 31 through September 11, 2004. (Arnett, 2006).

Table 4 - Total number of bats and bat species fatalities discovered at the Meyersdale Wind Energy Center from August 2 through September 13, 2004. (Arnett, 2006)

Chart 2 - Number of fresh bat fatalities in relation to the percent of the night raining by study day at the Mountaineer (MWEC) and Meyersdale (MeWEC) facilities. (Arnett, 2006)

Image 1 - This image was created by the United States Geological Survey and shows the potential migratory routes for hoary bats. As seen in the data above, hoary bats are affected by wind turbines more than any other species of bat. The migration route on the USGS map shows a route through the areas studied in Pennsylvania and West Virginia. (USGS, 2007)