The journal of raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1993)

The journal of raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1994)

The journal of raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1995)

The journal of raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1996)

The journal of raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1997)

The journal of raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1998)

The journal of raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1999)

The journal of raptor research - Raptor Research Foundation. (Raptor Research Foundation, 2000)

The journal of raptor research - Raptor Research Foundation. (Raptor Research Foundation, 2001)

The journal of raptor research - Raptor Research Foundation. (Raptor Research Foundation, 2002)