Joseph Fleskes (Former Employee)
Science and Products
Filter Total Items: 101
California mallards: a review California mallards: a review
Mallards (Anas platyrhynchos) are the most abundant breeding waterfowl species in California and are important to waterfowl hunters in the state. California is unique among major North American wintering waterfowl areas, in that most mallards harvested in California are also produced in California, meaning that California must provide both high quality wintering and breeding habitats for...
Authors
Cliff L. Feldheim, Joshua T. Ackerman, Shaun L. Oldenburger, John M. Eadie, Joseph P. Fleskes, Gregory S. Yarris
Waterbird habitat in California's Central Valley basins under climate, urbanization, and water management scenarios Waterbird habitat in California's Central Valley basins under climate, urbanization, and water management scenarios
California's Central Valley provides critical, but threatened habitat and food resources for migrating and wintering waterfowl, shorebirds, and other waterbirds. The Central Valley is comprised of nine basins that were defined by the Central Valley Joint Venture (CVJV) to assist in conservation planning. Basins vary in composition and extent of habitats, which primarily include croplands...
Authors
Elliott Matchett, Joseph P. Fleskes
Surveillance for highly pathogenic influenza A viruses in California during 2014–2015 provides insights into viral evolutionary pathways and the spatiotemporal extent of viruses in the Pacific Americas Flyway Surveillance for highly pathogenic influenza A viruses in California during 2014–2015 provides insights into viral evolutionary pathways and the spatiotemporal extent of viruses in the Pacific Americas Flyway
We used surveillance data collected in California before, concurrent with, and subsequent to an outbreak of highly pathogenic (HP) clade 2.3.4.4 influenza A viruses (IAVs) in 2014–2015 to (i) evaluate IAV prevalence in waterfowl, (ii) assess the evidence for spill-over infections in marine mammals and (iii) genetically characterize low-pathogenic (LP) and HP IAVs to refine inference on...
Authors
Andrew M. Ramey, Nichola J. Hill, Troy Cline, Magdalena Plancarte, Susan De La Cruz, Michael L. Casazza, Joshua T. Ackerman, Joseph P. Fleskes, T. Winston Vickers, Andrew B. Reeves, Frances Gulland, Christine Fontaine, Diann J. Prosser, Jonathan Runstadler, Walter M. Boyce
Long-term and widespread changes in agricultural practices influence ring-necked pheasant abundance in California Long-term and widespread changes in agricultural practices influence ring-necked pheasant abundance in California
Declines in bird populations in agricultural regions of North America and Europe have been attributed to agricultural industrialization, increases in use of agrochemical application, and increased predation related to habitat modification. Based on count data compiled from Breeding Bird Survey (BBS) from 1974 to 2012, Christmas Bird Count (CBC) collected from 1914 to 2013, and hunter...
Authors
Peter S. Coates, Brianne E. Brussee, Kristy B. Howe, Joseph P. Fleskes, Ian Dwight, Daniel P. Connelly, Matt G. Meshriy, Scott C. Gardner
Body mass, wing length, and condition of wintering ducks relative to hematozoa infection Body mass, wing length, and condition of wintering ducks relative to hematozoa infection
Waterfowl managers lack information regarding factors that may be reducing the positive response of waterfowl body condition to habitat improvements. Protozoan blood parasites (i.e., hematozoa) are commonly found in birds and have been related to reduced body mass, wing length, and body condition. We studied relationships between 12 measures of hematozoa infection and body mass, wing...
Authors
Joseph P. Fleskes, Andrew M. Ramey, Andrew B. Reeves, Julie L. Yee
Mallard (Anas platyrhynchos) mortality and recovery rates vary by wing molt status at time of banding Mallard (Anas platyrhynchos) mortality and recovery rates vary by wing molt status at time of banding
Recovery (i.e., shot, retrieved, and reported) rates and daily mortality risk of 52,330 adult Mallards (Anas platyrhynchos) leg-banded during pre-molt, in-molt, or post-molt during 1985–2011 were evaluated to better understand mortality during wing molt in dynamics of the Mallard population in California, USA. Recovery rates and non-hunting mortality risk varied by molt status at time of...
Authors
Joseph P. Fleskes, Brian J. Halstead, Jeffrey D. Kohl, Gregory S. Yarris
Science and Products
Filter Total Items: 101
California mallards: a review California mallards: a review
Mallards (Anas platyrhynchos) are the most abundant breeding waterfowl species in California and are important to waterfowl hunters in the state. California is unique among major North American wintering waterfowl areas, in that most mallards harvested in California are also produced in California, meaning that California must provide both high quality wintering and breeding habitats for...
Authors
Cliff L. Feldheim, Joshua T. Ackerman, Shaun L. Oldenburger, John M. Eadie, Joseph P. Fleskes, Gregory S. Yarris
Waterbird habitat in California's Central Valley basins under climate, urbanization, and water management scenarios Waterbird habitat in California's Central Valley basins under climate, urbanization, and water management scenarios
California's Central Valley provides critical, but threatened habitat and food resources for migrating and wintering waterfowl, shorebirds, and other waterbirds. The Central Valley is comprised of nine basins that were defined by the Central Valley Joint Venture (CVJV) to assist in conservation planning. Basins vary in composition and extent of habitats, which primarily include croplands...
Authors
Elliott Matchett, Joseph P. Fleskes
Surveillance for highly pathogenic influenza A viruses in California during 2014–2015 provides insights into viral evolutionary pathways and the spatiotemporal extent of viruses in the Pacific Americas Flyway Surveillance for highly pathogenic influenza A viruses in California during 2014–2015 provides insights into viral evolutionary pathways and the spatiotemporal extent of viruses in the Pacific Americas Flyway
We used surveillance data collected in California before, concurrent with, and subsequent to an outbreak of highly pathogenic (HP) clade 2.3.4.4 influenza A viruses (IAVs) in 2014–2015 to (i) evaluate IAV prevalence in waterfowl, (ii) assess the evidence for spill-over infections in marine mammals and (iii) genetically characterize low-pathogenic (LP) and HP IAVs to refine inference on...
Authors
Andrew M. Ramey, Nichola J. Hill, Troy Cline, Magdalena Plancarte, Susan De La Cruz, Michael L. Casazza, Joshua T. Ackerman, Joseph P. Fleskes, T. Winston Vickers, Andrew B. Reeves, Frances Gulland, Christine Fontaine, Diann J. Prosser, Jonathan Runstadler, Walter M. Boyce
Long-term and widespread changes in agricultural practices influence ring-necked pheasant abundance in California Long-term and widespread changes in agricultural practices influence ring-necked pheasant abundance in California
Declines in bird populations in agricultural regions of North America and Europe have been attributed to agricultural industrialization, increases in use of agrochemical application, and increased predation related to habitat modification. Based on count data compiled from Breeding Bird Survey (BBS) from 1974 to 2012, Christmas Bird Count (CBC) collected from 1914 to 2013, and hunter...
Authors
Peter S. Coates, Brianne E. Brussee, Kristy B. Howe, Joseph P. Fleskes, Ian Dwight, Daniel P. Connelly, Matt G. Meshriy, Scott C. Gardner
Body mass, wing length, and condition of wintering ducks relative to hematozoa infection Body mass, wing length, and condition of wintering ducks relative to hematozoa infection
Waterfowl managers lack information regarding factors that may be reducing the positive response of waterfowl body condition to habitat improvements. Protozoan blood parasites (i.e., hematozoa) are commonly found in birds and have been related to reduced body mass, wing length, and body condition. We studied relationships between 12 measures of hematozoa infection and body mass, wing...
Authors
Joseph P. Fleskes, Andrew M. Ramey, Andrew B. Reeves, Julie L. Yee
Mallard (Anas platyrhynchos) mortality and recovery rates vary by wing molt status at time of banding Mallard (Anas platyrhynchos) mortality and recovery rates vary by wing molt status at time of banding
Recovery (i.e., shot, retrieved, and reported) rates and daily mortality risk of 52,330 adult Mallards (Anas platyrhynchos) leg-banded during pre-molt, in-molt, or post-molt during 1985–2011 were evaluated to better understand mortality during wing molt in dynamics of the Mallard population in California, USA. Recovery rates and non-hunting mortality risk varied by molt status at time of...
Authors
Joseph P. Fleskes, Brian J. Halstead, Jeffrey D. Kohl, Gregory S. Yarris