Published in Journal of Raptor Research, in 1989, in volume 23, issue 1, pages 3-9

Published in Journal of Raptor Research, in 1989, in volume 23, issue 1, pages 10-13

Published in Journal of Raptor Research, in 1989, in volume 23, issue 1, pages 14-16

Published in Journal of Raptor Research, in 1989, in volume 23, issue 1, pages 16-17

Published in Journal of Raptor Research, in 1989, in volume 23, issue 1, pages 18-19

Published in Journal of Raptor Research, in 1989, in volume 23, issue 2, pages 27-38

Published in Journal of Raptor Research, in 1989, in volume 23, issue 2, pages 39-41

Published in Journal of Raptor Research, in 1989, in volume 23, issue 2, pages 42-44

Published in Journal of Raptor Research, in 1989, in volume 23, issue 2, pages 45-47

Published in Journal of Raptor Research, in 1989, in volume 23, issue 2, pages 48

Published in Journal of Raptor Research, in 1989, in volume 23, issue 2, pages 49-52

Published in Journal of Raptor Research, in 1989, in volume 23, issue 2, pages 52-53

Published in Journal of Raptor Research, in 1989, in volume 23, issue 2, pages 53-55

Published in Journal of Raptor Research, in 1989, in volume 23, issue 2, pages 55-56

Published in Journal of Raptor Research, in 1989, in volume 23, issue 3, pages 63-71

Published in Journal of Raptor Research, in 1989, in volume 23, issue 3, pages 72-84

Published in Journal of Raptor Research, in 1989, in volume 23, issue 3, pages 85-93

Published in Journal of Raptor Research, in 1989, in volume 23, issue 3, pages 94-98

Published in Journal of Raptor Research, in 1989, in volume 23, issue 3, pages 99-102

Published in Journal of Raptor Research, in 1989, in volume 23, issue 3, pages 103-106

Published in Journal of Raptor Research, in 1989, in volume 23, issue 3, pages 107-108

Published in Journal of Raptor Research, in 1989, in volume 23, issue 3, pages 108-110

Published in Journal of Raptor Research, in 1989, in volume 23, issue 3, pages 110-113

Published in Journal of Raptor Research, in 1989, in volume 23, issue 3, pages 113-115

Published in Journal of Raptor Research, in 1989, in volume 23, issue 3, pages 116-117

Published in Journal of Raptor Research, in 1989, in volume 23, issue 3, pages 117-120

Published in Journal of Raptor Research, in 1989, in volume 23, issue 4, pages 125-139

Published in Journal of Raptor Research, in 1989, in volume 23, issue 4, pages 140-146

Published in Journal of Raptor Research, in 1989, in volume 23, issue 4, pages 147-151

Published in Journal of Raptor Research, in 1989, in volume 23, issue 4, pages 152-156

Published in Journal of Raptor Research, in 1989, in volume 23, issue 4, pages 157-161

Published in Journal of Raptor Research, in 1989, in volume 23, issue 4, pages 162-166

Published in Journal of Raptor Research, in 1989, in volume 23, issue 4, pages 167-171

Published in Journal of Raptor Research, in 1989, in volume 23, issue 4, pages 172-175

Published in Journal of Raptor Research, in 1989, in volume 23, issue 4, pages 176-178

Published in Journal of Raptor Research, in 1989, in volume 23, issue 4, pages 179-180

Published in Journal of Raptor Research, in 1989, in volume 23, issue 4, pages 181-182

Published in Journal of Raptor Research, in 1989, in volume 23, issue 4, pages 182-183

Published in Journal of Raptor Research, in 1989, in volume 23, issue 4, pages 184