Paul Flint, Ph.D. (Former Employee)
Science and Products
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Nesting success of Northern Pintails on the coastal Yukon-Kuskokwim Delta, Alaska
We studied nesting chronology and success of Northern Pintails (Anas acuta) on the coastal Yukon-Kuskokwim Delta, Alaska during the summers of 1991-1993. We found a total of 795 nests during three annual searches of a 27.4 km2 area. Minimum nest density averaged 9.67 nests per km2. Nesting success varied among years and ranged from 43.12% in 1991 to 10.74% in 1993 (average 23.95%). Most nest loss
Authors
Paul L. Flint, J. Barry Grand
Variation in egg size of the northern pintail
Egg size is an important determinant of reproductive investment by birds. For many species, total investment in a clutch is limited by the size of stored reserves (Ankney and MacInnes 1978, Esler and Grand 1994a). Egg size determines the unit by which these stored reserves are partitioned. Individual females in most species of waterfowl show a high repeatability for egg size, implying that individ
Authors
Paul L. Flint, J. Barry Grand
Renesting ecology of northern pintails on the Yukon-Kuskokwim Delta, Alaska
We used radio telemetry to study renesting by wild, free-ranging Northern Pintails (Anas acuta) on the coastal Yukon-Kuskokwim Delta in 1994 and 1995. Fifty-six percent of females (n = 39) renested at least once. Propensity to renest declined among females that initiated later first nests. Renesting interval was not related to female weight, year, or initiation date of first nests. Mean interval b
Authors
J. Barry Grand, Paul L. Flint
A device for simultaneously measuring nest attendance and nest temperature in waterfowl
Previous studies of waterfowl have measured nest attendance and nest temperature separately using a variety of methods. A device was developed that monitors nest attendance and temperature simultaneously. The device consists of an artificial egg with a microswitch that records nest attendance and a thermistor probe that records temperature. Data are stored in a single-channel data logger. The devi
Authors
Paul L. Flint, Margaret C. MacCluskie
Estimating prefledging survival: Allowing for brood mixing and dependence among brood mates
Estimates of juvenile survival from hatch to fledging provide important information on waterfowl productivity. We develop a model for estimating survival of young waterfowl from hatch to fledging. Our model enables interchange of individuals among broods and relaxes the assumption that individuals within broods have independent survival probabilities. The model requires repeated observations of in
Authors
Paul L. Flint, Kenneth H. Pollock, Dana Thomas, James S. Sedinger
Effects of harness-attached transmitters on premigration and reproduction of Brant
Radio transmitters are an important tool in waterfowl ecology studies, but little is known about their effects on free-ranging geese. We attached transmitters to female brant (Branta bernicla nigricans) to investigate migration schedules at a fall staging area, return rates to nesting grounds, and nesting rates of returning females in subsequent breeding seasons. Radio-tagged females (n = 62) carr
Authors
David H. Ward, Paul L. Flint
Survival of juvenile black brant during brood rearing
Survival of young is an important and poorly understood component of waterfowl productivity. We estimated survival of black brant (Branta bernicla nigricans) goslings during summers 1987-89 on the Yukon-Kuskokwim Delta, Alaska, to determine timing and magnitude of gosling mortality and to compare methods of estimating gosling survival. Eighty-two percent of radio-tagged adult females (n = 61) fled
Authors
Paul L. Flint, James S. Sedinger, Kenneth H. Pollock
Environmental influence on life-history traits: Growth, survival, and fecundity in Black Brant (Branta bernicla)
We studied relationships between body size of female Black Brant goslings (Branta bernicla nigricans) late in their growth period and first year survival, eventual adult body size, breeding propensity, and size and volume of clutches they eventually produced to examine the relationship between growth and fitness in this population. We indexed body size by calculating PC1 scores based on either cul
Authors
James S. Sedinger, Paul L. Flint, Mark S. Lindberg
Variation in brood behavior of Black Brant
We studied behavior of broods of Black Brant (Branta bernicla nigricans) during five summers between 1987 and 1993, a period in which the local breeding population increased >3-fold. Goslings spent more time foraging than adults of either sex, while adult males spent more time alert and less time foraging than adult females. Percentage of time spent alert was positively correlated with brood size
Authors
James S. Sedinger, Michael W. Eichholz, Paul L. Flint
The adaptive significance of hatching synchrony of waterfowl eggs
We estimated the amount of incubation time that first laid Black Brent eggs received before completion of the clutch. First laid eggs received up to 48 hours of incubation before the last egg was laid in Brent clutches. Waterfowl clutches usually hatch within a period of 24 hours, suggesting that some mechanism reduces developmental asynchrony during incubation. The combination of incubation durin
Authors
Paul L. Flint, Mark S. Lindberg, Margaret C. MacCluskie, James S. Sedinger
Reproductive implications of egg-size variation in Black Brant
We analyzed variation in egg size of Black Brant (Branta bernicla nigricans) in relation to clutch size, laying date, female age, year, and position in the laying sequence. A total of 3,478 eggs was measured over three years. Egg size increased with clutch size and female age, and decreased with laying date, year, and position in the laying sequence. We did not detect a negative phenotypic correla
Authors
Paul L. Flint, James S. Sedinger
Arctic fox control improves nest success of black brant
No abstract available.
Authors
R. Michael Anthony, Paul L. Flint, J.S. Sedinger
Science and Products
Filter Total Items: 17
No Result Found
Filter Total Items: 133
Nesting success of Northern Pintails on the coastal Yukon-Kuskokwim Delta, Alaska
We studied nesting chronology and success of Northern Pintails (Anas acuta) on the coastal Yukon-Kuskokwim Delta, Alaska during the summers of 1991-1993. We found a total of 795 nests during three annual searches of a 27.4 km2 area. Minimum nest density averaged 9.67 nests per km2. Nesting success varied among years and ranged from 43.12% in 1991 to 10.74% in 1993 (average 23.95%). Most nest loss
Authors
Paul L. Flint, J. Barry Grand
Variation in egg size of the northern pintail
Egg size is an important determinant of reproductive investment by birds. For many species, total investment in a clutch is limited by the size of stored reserves (Ankney and MacInnes 1978, Esler and Grand 1994a). Egg size determines the unit by which these stored reserves are partitioned. Individual females in most species of waterfowl show a high repeatability for egg size, implying that individ
Authors
Paul L. Flint, J. Barry Grand
Renesting ecology of northern pintails on the Yukon-Kuskokwim Delta, Alaska
We used radio telemetry to study renesting by wild, free-ranging Northern Pintails (Anas acuta) on the coastal Yukon-Kuskokwim Delta in 1994 and 1995. Fifty-six percent of females (n = 39) renested at least once. Propensity to renest declined among females that initiated later first nests. Renesting interval was not related to female weight, year, or initiation date of first nests. Mean interval b
Authors
J. Barry Grand, Paul L. Flint
A device for simultaneously measuring nest attendance and nest temperature in waterfowl
Previous studies of waterfowl have measured nest attendance and nest temperature separately using a variety of methods. A device was developed that monitors nest attendance and temperature simultaneously. The device consists of an artificial egg with a microswitch that records nest attendance and a thermistor probe that records temperature. Data are stored in a single-channel data logger. The devi
Authors
Paul L. Flint, Margaret C. MacCluskie
Estimating prefledging survival: Allowing for brood mixing and dependence among brood mates
Estimates of juvenile survival from hatch to fledging provide important information on waterfowl productivity. We develop a model for estimating survival of young waterfowl from hatch to fledging. Our model enables interchange of individuals among broods and relaxes the assumption that individuals within broods have independent survival probabilities. The model requires repeated observations of in
Authors
Paul L. Flint, Kenneth H. Pollock, Dana Thomas, James S. Sedinger
Effects of harness-attached transmitters on premigration and reproduction of Brant
Radio transmitters are an important tool in waterfowl ecology studies, but little is known about their effects on free-ranging geese. We attached transmitters to female brant (Branta bernicla nigricans) to investigate migration schedules at a fall staging area, return rates to nesting grounds, and nesting rates of returning females in subsequent breeding seasons. Radio-tagged females (n = 62) carr
Authors
David H. Ward, Paul L. Flint
Survival of juvenile black brant during brood rearing
Survival of young is an important and poorly understood component of waterfowl productivity. We estimated survival of black brant (Branta bernicla nigricans) goslings during summers 1987-89 on the Yukon-Kuskokwim Delta, Alaska, to determine timing and magnitude of gosling mortality and to compare methods of estimating gosling survival. Eighty-two percent of radio-tagged adult females (n = 61) fled
Authors
Paul L. Flint, James S. Sedinger, Kenneth H. Pollock
Environmental influence on life-history traits: Growth, survival, and fecundity in Black Brant (Branta bernicla)
We studied relationships between body size of female Black Brant goslings (Branta bernicla nigricans) late in their growth period and first year survival, eventual adult body size, breeding propensity, and size and volume of clutches they eventually produced to examine the relationship between growth and fitness in this population. We indexed body size by calculating PC1 scores based on either cul
Authors
James S. Sedinger, Paul L. Flint, Mark S. Lindberg
Variation in brood behavior of Black Brant
We studied behavior of broods of Black Brant (Branta bernicla nigricans) during five summers between 1987 and 1993, a period in which the local breeding population increased >3-fold. Goslings spent more time foraging than adults of either sex, while adult males spent more time alert and less time foraging than adult females. Percentage of time spent alert was positively correlated with brood size
Authors
James S. Sedinger, Michael W. Eichholz, Paul L. Flint
The adaptive significance of hatching synchrony of waterfowl eggs
We estimated the amount of incubation time that first laid Black Brent eggs received before completion of the clutch. First laid eggs received up to 48 hours of incubation before the last egg was laid in Brent clutches. Waterfowl clutches usually hatch within a period of 24 hours, suggesting that some mechanism reduces developmental asynchrony during incubation. The combination of incubation durin
Authors
Paul L. Flint, Mark S. Lindberg, Margaret C. MacCluskie, James S. Sedinger
Reproductive implications of egg-size variation in Black Brant
We analyzed variation in egg size of Black Brant (Branta bernicla nigricans) in relation to clutch size, laying date, female age, year, and position in the laying sequence. A total of 3,478 eggs was measured over three years. Egg size increased with clutch size and female age, and decreased with laying date, year, and position in the laying sequence. We did not detect a negative phenotypic correla
Authors
Paul L. Flint, James S. Sedinger
Arctic fox control improves nest success of black brant
No abstract available.
Authors
R. Michael Anthony, Paul L. Flint, J.S. Sedinger
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