Bird strikes to civil helicopters in the United States, 1990-2005.
Dolbeer, R.A., S.E. Wright and E.C. Cleary. 2006. Bird strikes to civil helicopters in the United States, 1990-2005. Appendix A, pages 45-50 in Cleary, E. C., R. A. Dolbeer, & S. E. Wright. 2006. Wildlife strikes to civil aircraft in the United States, 1990-2005. U.S. Department of Transportation, Federal Aviation Administration, Office of Airport Safety and Standards, Serial Report No. 12, Washington, DC., USA. 63 pages (available as PDF file at http://wildlife-mitigation.tc.faa.gov).
