Sam Droege
Sam is a Wildlife Biologist at the Eastern Ecological Science Center in Laurel, MD.
Sam has coordinated the North American Breeding Bird Survey Program, developed the North American Amphibian Monitoring Program, the BioBlitz, Cricket Crawl, and FrogwatchUSA programs and worked on the design and evaluation of monitoring programs. Currently he is developing an inventory and monitoring program for native bees, online identification guides for North American bees at discoverlife.org, and reviving the North American Bird Phenology Program.
Education and Certifications
M.S. from State University of New York – Syracuse
B.S. from University of Maryland
Science and Products
Filter Total Items: 72
Northern bobwhite, gray partridge, and ring-necked pheasant population trends (1966-1988) from the North American Breeding Bird Survey Northern bobwhite, gray partridge, and ring-necked pheasant population trends (1966-1988) from the North American Breeding Bird Survey
We use North American Breeding Bird Survey data to estimate population trends for 1966-1988 for northern bobwhite (Colinus virginianus), ring-necked pheasant (Phasianus colchicus), and gray partridge (Perdix perdix). Bobwhite populations have undergone widespread declines, pheasant have undergone major declines in eastern North America with mixed trends elsewhere, gray partridge have...
Authors
Sam Droege, J.R. Sauer
Topics in route-regression analysis Topics in route-regression analysis
The route-regression method has been used in recent years to analyze data from roadside surveys. With this method, a population trend is estimated for each route in a region, then regional trends are estimated as a weighted mean of the individual route trends. This method can accurately incorporate data that is unbalanced by changes in years surveyed and observer differences. We suggest...
Authors
P.H. Geissler, J.R. Sauer
The North American Breeding Bird Survey The North American Breeding Bird Survey
No abstract available.
Authors
Sam Droege
North American Breeding Bird Survey Annual Summary, 1989 North American Breeding Bird Survey Annual Summary, 1989
The North American Breeding Bird Survey (BBS) is run by approximately 2,000 skilled amateur ornithologists and is coordinated cooperatively by the U.S. Fish and Wildlife Service and the Canadian Wildlife Service. Since 1966, BBS cooperators have been collecting standardized information on North American bird populations. The BBS is a roadside survey, comprised of permanent routes that...
Authors
Sam Droege, J.R. Sauer
Population declines in North American birds that migrate to the neotropics Population declines in North American birds that migrate to the neotropics
Using data from the North American Breeding Bird Survey, we determined that most neotropical migrant bird species that breed in forests of the eastern United States and Canada have recently (1978-1987) declined in abundance after a period of stable or increasing populations. Most permanent residents and temperate-zone migrants did not show a general pattern of decrease during this period...
Authors
C.S. Robbins, J.R. Sauer, R.S. Greenberg, Sam Droege
North American Breeding Bird Survey Annual Summary, 1988 North American Breeding Bird Survey Annual Summary, 1988
Introduction: The North American Breeding Bird Survey (BBS) is run by approximately 2,000 skilled amateur ornithologists, and is coordinated cooperatively by the U.S. Fish and Wildlife Service and the Canadian Wildlife Service. Beginning in 1966, BBS cooperators have been collecting standardized information on North American bird populations. The BBS is a roadside survey, comprised of...
Authors
Sam Droege, J.R. Sauer
Monitoring bird populations with Breeding Bird Survey and atlas data Monitoring bird populations with Breeding Bird Survey and atlas data
The principal means of monitoring avian species in North America since 1966 is the Breeding Bird Survey (BBS). Nearly 2000 random roadside rouleS of 50 3-minule stops each are run once each summer by experienced observers. Two-year and 10ng-lerm population trends have been calculated for 250 of the more common species. We show how Breeding Bird Atlas dala for lWO periods of time can also...
Authors
C.S. Robbins, Sam Droege, J.R. Sauer
Population trends of the Purple Martin in North America, 1966-1986 Population trends of the Purple Martin in North America, 1966-1986
No abstract available.
Authors
J.R. Sauer, M. Klimkiewicz, Sam Droege
Population trends of the purple martin in North America, 1966 - 1986 Population trends of the purple martin in North America, 1966 - 1986
No abstract available.
Authors
J.R. Sauer, M. Klimkiewicz, Sam Droege
Forty-fourth breeding bird census. 61. Beech-spruce-maple forest Forty-fourth breeding bird census. 61. Beech-spruce-maple forest
No abstract available.
Authors
B.R. Noon, Sam Droege
Forty-fourth breeding bird census. 60. Beech-spruce-hemlock forest Forty-fourth breeding bird census. 60. Beech-spruce-hemlock forest
No abstract available.
Authors
Sam Droege, B.R. Noon
Science and Products
Filter Total Items: 72
Northern bobwhite, gray partridge, and ring-necked pheasant population trends (1966-1988) from the North American Breeding Bird Survey Northern bobwhite, gray partridge, and ring-necked pheasant population trends (1966-1988) from the North American Breeding Bird Survey
We use North American Breeding Bird Survey data to estimate population trends for 1966-1988 for northern bobwhite (Colinus virginianus), ring-necked pheasant (Phasianus colchicus), and gray partridge (Perdix perdix). Bobwhite populations have undergone widespread declines, pheasant have undergone major declines in eastern North America with mixed trends elsewhere, gray partridge have...
Authors
Sam Droege, J.R. Sauer
Topics in route-regression analysis Topics in route-regression analysis
The route-regression method has been used in recent years to analyze data from roadside surveys. With this method, a population trend is estimated for each route in a region, then regional trends are estimated as a weighted mean of the individual route trends. This method can accurately incorporate data that is unbalanced by changes in years surveyed and observer differences. We suggest...
Authors
P.H. Geissler, J.R. Sauer
The North American Breeding Bird Survey The North American Breeding Bird Survey
No abstract available.
Authors
Sam Droege
North American Breeding Bird Survey Annual Summary, 1989 North American Breeding Bird Survey Annual Summary, 1989
The North American Breeding Bird Survey (BBS) is run by approximately 2,000 skilled amateur ornithologists and is coordinated cooperatively by the U.S. Fish and Wildlife Service and the Canadian Wildlife Service. Since 1966, BBS cooperators have been collecting standardized information on North American bird populations. The BBS is a roadside survey, comprised of permanent routes that...
Authors
Sam Droege, J.R. Sauer
Population declines in North American birds that migrate to the neotropics Population declines in North American birds that migrate to the neotropics
Using data from the North American Breeding Bird Survey, we determined that most neotropical migrant bird species that breed in forests of the eastern United States and Canada have recently (1978-1987) declined in abundance after a period of stable or increasing populations. Most permanent residents and temperate-zone migrants did not show a general pattern of decrease during this period...
Authors
C.S. Robbins, J.R. Sauer, R.S. Greenberg, Sam Droege
North American Breeding Bird Survey Annual Summary, 1988 North American Breeding Bird Survey Annual Summary, 1988
Introduction: The North American Breeding Bird Survey (BBS) is run by approximately 2,000 skilled amateur ornithologists, and is coordinated cooperatively by the U.S. Fish and Wildlife Service and the Canadian Wildlife Service. Beginning in 1966, BBS cooperators have been collecting standardized information on North American bird populations. The BBS is a roadside survey, comprised of...
Authors
Sam Droege, J.R. Sauer
Monitoring bird populations with Breeding Bird Survey and atlas data Monitoring bird populations with Breeding Bird Survey and atlas data
The principal means of monitoring avian species in North America since 1966 is the Breeding Bird Survey (BBS). Nearly 2000 random roadside rouleS of 50 3-minule stops each are run once each summer by experienced observers. Two-year and 10ng-lerm population trends have been calculated for 250 of the more common species. We show how Breeding Bird Atlas dala for lWO periods of time can also...
Authors
C.S. Robbins, Sam Droege, J.R. Sauer
Population trends of the Purple Martin in North America, 1966-1986 Population trends of the Purple Martin in North America, 1966-1986
No abstract available.
Authors
J.R. Sauer, M. Klimkiewicz, Sam Droege
Population trends of the purple martin in North America, 1966 - 1986 Population trends of the purple martin in North America, 1966 - 1986
No abstract available.
Authors
J.R. Sauer, M. Klimkiewicz, Sam Droege
Forty-fourth breeding bird census. 61. Beech-spruce-maple forest Forty-fourth breeding bird census. 61. Beech-spruce-maple forest
No abstract available.
Authors
B.R. Noon, Sam Droege
Forty-fourth breeding bird census. 60. Beech-spruce-hemlock forest Forty-fourth breeding bird census. 60. Beech-spruce-hemlock forest
No abstract available.
Authors
Sam Droege, B.R. Noon