This would broaden the wetted area, and may increase effective foraging area for bats. To follow any changes in bat foraging activity and intensity, we have monitored bat foraging activity along the existing creek channel and in the present meadow. These results are shown comparatively in figure 1 below. Comparative bat pass activity along the existing creek channel and in the present meadow in Knuthson Meadows of Carman Valley. Cumulative results of observations from June through October are displayed normalized to time of sunset.
Error bars represent standard error of measurement.
We will use data such as these to help document and quantify any changes that may occur as a result of the Carman Valley Watershed restoration. Some bats of Carman Valley are displayed below. Beside the photos are sonograms of their calls. All the sonograms below are displayed at the same scale for comparison. Click on the sonograms to hear the time expanded calls.