Mortality was widespread at the OWEC; we found carcasses at 46 turbines (68%).
The three hotspot turbines were <5% of the turbines at the OWEC, but they accounted for 16% of the Brazilian free-tailed bat carcasses we collected in 2004 and 2005.
A "maternity" colony occurred approximately 15 km north and a "bachelor" colony 15 km northeast of the OWEC. Brazilian free-tailed bats account for nearly 1.5 million (Glass, 1982) of an estimated 2 million bats within these two caves with cave myotis the second most abundant (John Gay, pers.
A Mesonet weather station, located 17 km north of the OWEC, recorded 22.28 cm and 40.00 cm of precipitation during the sampling periods in 2004 and 2005, respectively.