J. Brian Davis
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View article: Climate and en route thermals affect long‐term population dynamics of soaring birds
Climate and en route thermals affect long‐term population dynamics of soaring birds Open
Migration allows animals to capitalize on the availability of seasonal food resources or to avoid inclement weather that may jeopardize survival. However, migratory birds are challenged physiologically and ecologically by varying climatic …
View article: Mallard winter use of conservation program and nonprogram lands in Mississippi
Mallard winter use of conservation program and nonprogram lands in Mississippi Open
Prior to the 19 th century, the Mississippi Alluvial Valley (MAV) was a vast bottomland hardwood forest ecosystem with associated wetlands and intrinsic resources. Conversion for human uses in the 20 th century transformed the MAV into an …
View article: Bayesian integrated species distribution models for hierarchical resource selection by a soaring bird
Bayesian integrated species distribution models for hierarchical resource selection by a soaring bird Open
Migratory birds exhibit seasonal geographic range (hereafter, range) dynamics during the annual cycle. Few studies have examined how migratory birds select their habitats for range occupancy at the species level and space use at the indivi…
View article: Wood ducks and hooded mergansers as interspecific brood parasites: An evaluation of parasitic egg survival
Wood ducks and hooded mergansers as interspecific brood parasites: An evaluation of parasitic egg survival Open
Conspecific and interspecific brood parasitism are alternate reproductive strategies more pervasive in waterfowl than in any other group of birds. While previous research has measured costs incurred by nest hosts incubating parasitized clu…
View article: Migratory Movements and Home Ranges of Geographically Distinct Wintering Populations of a Soaring Bird
Migratory Movements and Home Ranges of Geographically Distinct Wintering Populations of a Soaring Bird Open
Migratory soaring birds exhibit spatiotemporal variation in their circannual movements. Nevertheless, it remains uncertain how different winter environments affect the circannual movement patterns of migratory soaring birds. Here, we inves…
View article: Low levels of hybridization between domestic and wild Mallards wintering in the lower Mississippi Flyway
Low levels of hybridization between domestic and wild Mallards wintering in the lower Mississippi Flyway Open
The Mallard (Anas platyrhynchos) duck is a ubiquitous and socio-economically important game bird in North America. Despite their generally abundant midcontinent population, Mallards in eastern North America are declining, which may be part…
View article: Resource Use Overlap by Sympatric Wintering American Black Ducks and Mallards in Tennessee
Resource Use Overlap by Sympatric Wintering American Black Ducks and Mallards in Tennessee Open
American black ducks Anas rubripes are declining in traditionally important wintering areas in the south-central Mississippi flyway. Understanding resource exploitation by black ducks and morphologically similar and co-existing mallards An…
View article: Predicting consistent foraging ecologies of migrating waterbirds: Using stable isotope and parasite measurements as indicators of landscape use
Predicting consistent foraging ecologies of migrating waterbirds: Using stable isotope and parasite measurements as indicators of landscape use Open
The emergence of novel human pathogens is frequently linked with zoonotic events and human-wildlife interactions that promote disease transmission. Consequently, surveillance of wildlife populations for candidate diseases that could spread…
View article: Mottled Duck introductions to South Carolina: The ugly, the bad, and the good?
Mottled Duck introductions to South Carolina: The ugly, the bad, and the good? Open
Translocations or other movements of wildlife sometimes accomplish their intended objectives, but unforeseen consequences may arise and disrupt locally adapted ecological communities, restructure or dilute genetic integrity of populations …
View article: First report of a gynandromorph of Florilegus condignus (Cresson, 1878) (Hymenoptera, Apidae), with notes on phenology and abundance
First report of a gynandromorph of Florilegus condignus (Cresson, 1878) (Hymenoptera, Apidae), with notes on phenology and abundance Open
Gynandromorphs are individuals that exhibit aspects of both males and females simultaneously and are the most commonly reported sexual anomalies in bees. We describe the first known specimen of a gynandromorph of the specialist pollinator …
View article: Scaup Depredation on Arkansas Baitfish and Sportfish Aquaculture
Scaup Depredation on Arkansas Baitfish and Sportfish Aquaculture Open
Lesser scaup ( Aythya affinis ) and greater scaup ( A. marila ), hereafter scaup, consume a variety of aquatic invertebrates, plants, and occasionally small fish. Scaup have foraged on commercial aquaculture farms in the southern United St…
View article: Differential migratory movements of geographically distinct wintering populations of a soaring bird
Differential migratory movements of geographically distinct wintering populations of a soaring bird Open
Background: Migratory soaring birds exhibit spatiotemporal variation in their circannual movements. We hypothesized that the circadian and seasonal movements of soaring migrants may depend primarily on exogenous factors such as thermals an…
View article: Economic effects of predation by scaup on baitfish and sportfish farms
Economic effects of predation by scaup on baitfish and sportfish farms Open
Fish‐eating birds have been found to consume baitfish and sportfish raised on farms in the United States. Understanding the on‐farm economic effects of such wildlife conflicts is essential for wildlife management agencies to make informed …
View article: Distribution and abundance of scaup using baitfish and sportfish farms in eastern Arkansas
Distribution and abundance of scaup using baitfish and sportfish farms in eastern Arkansas Open
Arkansas' bait‐ and sportfish facilities are commonly used by various piscivorous bird species, including lesser scaup ( Aythya affinis ) and greater scaup ( A. marila ) that consume substantial quantities of fish. To mediate this predatio…
View article: Investigation of Pathogenic Bacterial Transport by Waterbirds: A Case Study of Flooded and Non-Flooded Rice Systems in Mississippi
Investigation of Pathogenic Bacterial Transport by Waterbirds: A Case Study of Flooded and Non-Flooded Rice Systems in Mississippi Open
Waterbirds may facilitate pathogen transport in rice fields from autumn to winter. This study investigated pathogen dynamics in two types of rice fields, those considered conventionally managed and a low-external-input-sustainable-agricult…
View article: Diets of scaup occupying baitfish and sportfish farms in eastern Arkansas
Diets of scaup occupying baitfish and sportfish farms in eastern Arkansas Open
Although not typically associated with eating fish, lesser scaup (Aythya affinis) and greater scaup (Aythya marila) have recently been reported consuming large quantities of bait- and sportfish produced on Arkansas commercial aquaculture f…
View article: Using cameras to index waterfowl abundance in winter-flooded rice fields
Using cameras to index waterfowl abundance in winter-flooded rice fields Open
Extensive wetland habitat loss across the continental United States has caused post-harvested rice fields to become an important surrogate wetland habitat for migratory waterfowl. Flooded rice fields used by waterfowl have the potential to…
View article: Depredation Impact of Double-Crested Cormorants (Phalacrocorax auritus) on Commercial Catfish Production in the Mississippi Delta
Depredation Impact of Double-Crested Cormorants (Phalacrocorax auritus) on Commercial Catfish Production in the Mississippi Delta Open
Double-crested Cormorants (Phalacrocorax auritus) impact United States commercial aquaculture and are considered the greatest avian predators on catfish (Ictalurus spp.) aquaculture facilities. Cormorants are especially problematic in the …
View article: White-cheeked Pintail duckling and brood survival across wetland types at Humacao Nature Reserve, Puerto Rico
White-cheeked Pintail duckling and brood survival across wetland types at Humacao Nature Reserve, Puerto Rico Open
Duckling survival is an important influence on recruitment in several North American Anas species. White-cheeked Pintail (Anas bahamensis) breeding in Puerto Rico encounter a variety of wetland types that may influence duckling survival. W…
View article: The Teal<b>The Teal</b>by Matthieu Guillemain and Johan Elmberg. 2014. T & AD Poyser; Bloomsbury Publishing, New York. 320 pp. $85.00. ISBN 978-1-4729-0850-6 and E-978-1-4729-0851-3.
The Teal<b>The Teal</b>by Matthieu Guillemain and Johan Elmberg. 2014. T & AD Poyser; Bloomsbury Publishing, New York. 320 pp. $85.00. ISBN 978-1-4729-0850-6 and E-978-1-4729-0851-3. Open
The Teal is a fine compendium on the ecology and management of a popular species of duck in the Northern hemisphere, the Eurasian or common teal (Anas crecca) and the American Green-winged teal (Anas carolinensis), hereafter teal.The Teal …
View article: Winter survival of female American Black Ducks in Tennessee, USA
Winter survival of female American Black Ducks in Tennessee, USA Open
Many migratory bird species, including the American Black Duck (Anas rubripes; hereafter black duck), face challenges to their survival during winter due to potentially limited resources and high energetic demands. These winter processes c…