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: 71
Survey Designs and Statistical Methods for the Estimation of Avian Population Trends
No abstract available.
Authors
J.R. Sauer, Sam Droege
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
Adaptations to tidal marshes in breeding populations of the swamp sparrow
The Coastal Plain Swamp Sparrow (Melospiza georgiana nigrescens) was originally described from a small number of specimens from the tidal marshes of the Nanticoke River in southeastern Maryland. Based on our quantitative analysis of a larger series of specimens, we found that Swamp Sparrows collected during the breeding season from the Chesapeak and Delaware bays (and tributaries) and...
Authors
R. Greenberg, Sam Droege
Recent population trends of the eastern bluebird
North American Breeding Bird Survey data for the period 1966-1987 indicate that Eastern Bluebird (Sialia sialis) populations declined during the 1970s, primarily in association with either severe winters or severe spring storms. In recent years, bluebird populations have increased to levels similar to those observed during the first year (1966) of the survey. Survey results suggest that...
Authors
J.R. Sauer, Sam Droege
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
Chandler S. Robbins, J.R. Sauer, R.S. Greenberg, Sam Droege
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
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
Chandler S. Robbins, Sam Droege, J.R. Sauer
Population trends of the Purple Martin in North America, 1966-1986
No abstract available.
Authors
J.R. Sauer, M. K. Klimkiewicz, Sam Droege
Population trends of the purple martin in North America, 1966 - 1986
No abstract available.
Authors
J.R. Sauer, M. K. Klimkiewicz, Sam Droege
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
No abstract available.
Authors
Sam Droege, B.R. Noon
Science and Products
Filter Total Items: 71
Survey Designs and Statistical Methods for the Estimation of Avian Population Trends
No abstract available.
Authors
J.R. Sauer, Sam Droege
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
Adaptations to tidal marshes in breeding populations of the swamp sparrow
The Coastal Plain Swamp Sparrow (Melospiza georgiana nigrescens) was originally described from a small number of specimens from the tidal marshes of the Nanticoke River in southeastern Maryland. Based on our quantitative analysis of a larger series of specimens, we found that Swamp Sparrows collected during the breeding season from the Chesapeak and Delaware bays (and tributaries) and...
Authors
R. Greenberg, Sam Droege
Recent population trends of the eastern bluebird
North American Breeding Bird Survey data for the period 1966-1987 indicate that Eastern Bluebird (Sialia sialis) populations declined during the 1970s, primarily in association with either severe winters or severe spring storms. In recent years, bluebird populations have increased to levels similar to those observed during the first year (1966) of the survey. Survey results suggest that...
Authors
J.R. Sauer, Sam Droege
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
Chandler S. Robbins, J.R. Sauer, R.S. Greenberg, Sam Droege
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
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
Chandler S. Robbins, Sam Droege, J.R. Sauer
Population trends of the Purple Martin in North America, 1966-1986
No abstract available.
Authors
J.R. Sauer, M. K. Klimkiewicz, Sam Droege
Population trends of the purple martin in North America, 1966 - 1986
No abstract available.
Authors
J.R. Sauer, M. K. Klimkiewicz, Sam Droege
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
No abstract available.
Authors
Sam Droege, B.R. Noon