Research assistant Wake Forest University, Winston-Salem, North Carolina, 1983-1985, teaching assistant, 1983-1987, research associate, 1987-1988. Postdoctoral research assistant North Carolina State University, Raleigh, 1988-1989. Assistant professor biology Wilkes University, Wilkes-Barre, Pennsylvania, since 1989.
Board directors Pennsylvania Biological Survey, 1990-1991. Research associate Carnegie Museum National History, 1992.
Leader Boy Scouts American, Lancaster, Pennsylvania, 1974-1978, Wilkes-Barre, 1990. Volunteer Big Brothers of America, Lancaster, 1980-1981. Member American Society Mammalogists (program committee 1991-1993), American Society Zoologists, Ecological Society of America, Pennsylvania Academy of Sciences, International Society Behavioral Ecologists, Sigma Xi (Research award 1987), Phi Kappa Phi.
1983 - 1985
1988 - 1989