Christopher E. Comer

Adult White-tailed Deer Seasonal Home Range and Habitat Composition in Northwest Louisiana

SEAFWA Journal Volume 3, March 2016

Despite decades of interest and research, many questions remain about seasonal movements and habitat use of white-tailed deer (Odocoileus virginianus), particularly in the Southeast. The advent of GPS-based telemetry has made detailed studies of year-round movements feasible. We assessed monthly habitat use for adult male (n = 15) and female (n = 15) deer at Barksdale Air Force Base in northwestern Louisiana using GPS radio collars collecting locations at hourly intervals over approximately one year. Males had larger monthly home ranges (97-380 ha) than females (44-181 ha), particularly in...


Blood Lead Exposure Concentrations in Mottled Ducks (Anas fulvigula) on the Upper Texas Coast

SEAFWA Journal Volume 2, March 2015

The mottled duck (Anas fulvigula) is a non-migratory waterfowl species dependent upon coastal marsh systems, including those on the Texas Chenier Plain National Wildlife Refuge (NWR) Complex, and considered a regional indicator species of marsh habitat quality. Research from the early 1970s, 1990s, and early - 2000s indicated that mottled ducks continued to exhibit elevated wing-bone lead (Pb) concentrations, decades after implementation of non-toxic shot regulations. However, wing-bone concentrations reflect lifetime accumulation of Pb, whereas blood Pb concentrations reflect more recent...


Estimating Bobcat Abundance in East Texas Using Infrared-triggered Cameras

Reliable population estimation techniques for cryptic forest predators generally are lacking. Development of an efficient and reliable technique to estimate predator abundance directly would be a valuable tool for wildlife managers concerned with predator management. We evaluated the potential for camera survey techniques to provide abundance estimates for bobcats (Lynx rufus) in southeastern forest habitats. We also determined our ability to capture other forest carnivores photographically using these techniques. We used TrailMaster 1500 active infrared-triggered cameras to estimate...


Daily Movements of Female White-tailed Deer Relative to Parturition and Breeding

To assess how white-tailed deer (Odocoileus virginianus) herd demographics influence reproductive behaviors, we examined 24-h diel movements of female white-tailed deer relative to parturition and breeding in a low-density population with a near even sex ratio at the Savannah River Site (SRS), South Carolina. We conducted a series of intensive, 24-h radio-tracking periods of 13 females during spring and fall 2002. We compared daily range (ha), rate of travel (m/h), and distance between extreme daily locations (m), among the periods of pre-parturition and post-parturition and pre-, peak-,...


Effects of Controlled Dog Hunting on Movements of Female White-tailed Deer

Understanding the responses of white-tailed deer (Odocoileus virginianus) to controlled dog hunting can aid in the effective implementation of canine-assisted population management strategies. We examined the 24-h diel movements of 13 radio-collared female deer exposed to dog hunting on the Savannah River Site (SRS) near Aiken, South Carolina, where regulated dog hunting has occurred since 1965. We compared diel home range size, rate of travel, and distance between extreme diel locations before, during, and after hunts from 14 September-14 December 2002. Diel home range size (F2,91 = 7.71...