Journal of the Southeastern Association of Fish and Wildlife Agencies

Territorial behavior of beaver (Castor canadensis) has not been well documented in the Southeast. Study of this behavioral mechanism may lead to methods which may aid in the control of nuisance beavers in economic and environmentally sensitive areas. Territorial behavior was evaluated for beaver in 4 study areas in the Piedmont of South Carolina by monitoring scent marking and movements of adjacent colonies. Scent marking was observed during January 1982 to June 1985 on 1 area with high (≥ 0.8 beavers/ha) and 3 areas with low densities (≤0.3/ ha), of beaver. Beaver (N = 9) from 2 adjacent colonies were implanted intraperitoneally with radio transmitters and monitored from February 1983 through March 1984. Beaver on the high-density area built and maintained scent mounds from mid-September through mid-June. Beavers built new mounds from mid- September to late December.

Thirteen radio equipped gray foxes (Urocyon cinereoargenteus) were located by triangulation during 24-hour tracking periods on the Savannah River Site, Aiken, South Carolina, between 22 March 1985 and 24 May 1986. Diurnal and nocturnal habitat use was evaluated for each sex within seasonal (pup rearing N ~ 6, dispersal and mating N = 9, and denning N =1) and comprehensive (N = 13) home ranges. Proportional use of available habitats was not observed for 13 of 16 sex-temporal groupings (P < 0.05). Tests for relative use of 7 available habitat types demonstrated diurnal preference by both sexes of 5- to 14-year-old pine stands and, depending on sex and season, random or preferred use of these stands at night. Males and females in most seasonal groupings used ≥ 5-year-old pine stands less than expected during the day and randomly used them at night. Less than expected use of the 0- to 4-year-old pine/old field category was frequently exhibited, depending on sex and season.

The role of coyotes (Canis latrans) as predators of wild turkeys (Meleagris gallopavo) remains unclear. We determined proportion of wild turkey and other prey species in coyote scats collected during the wild turkey reproductive and non-reproductive seasons from 4 study areas with wild turkey populations. Wild turkey constituted only a small portion (x = <4%) of coyote diet on all study areas. Wild turkey increased in coyote diet during the wild turkey reproductive season, but the differences were not significant. Wild turkeys have evolved in the presence of predators and possess adaptations for dealing with predation such as wariness, large clutch sizes, and roosting at night. Wild turkeys in quality habitat appear to maintain populations when sympatric with coyotes.

Scent stations are assumed to be a simple and economical method to index furbearer populations, but recent literature challenges the reliability of this technique. We examined several variables that could affect visitation rates of 2 commonly indexed species. Raccoon (Procyon lotor) and bobcat (Felis rufus) visitation rates of scent stations were monitored on the Hatchie National Wildlife Refuge in western Tennessee during summer and fall 1991. Factors tested included placement from water and roads, attractant type, and within-habitat variability of scent-station visitation rates. Placement of scent stations near water (≤10 m) increased visitation rates of raccoons. Attractant type (visual vs. olfactory) did not affect visitation rates of bobcats or raccoons regarding visual attraction to a scent station. Differences existed between sites within a habitat for raccoons.

During the last 20 years, coyote populations in the Southeast have increased. Information about livestock producers' perceptions towards coyotes and about economic and actual damage caused by coyotes in the Southeast was needed. We mailed questionnaires to 825 members of the Alabama Cattleman's Association (ACA) and to 189 members of the Alabama Lamb, Wool, and Mohair Association (LWMA) to evaluate knowledge and attitudes of Alabama cattle, sheep, and goat producers towards coyotes; and determine real or perceived economic losses caused by coyotes. Of the 1,014 livestock producers surveyed, 52 were unaccounted for, 5 respondents returned nonusable questionnaires, and 129 of the remaining 181 LWMA producers and 544 of the remaining 776 ACA producers surveyed returned useable questionnaires. Ten percent (n = 28) of the nonrespondents were contacted and no nonresponse bias was found.

Empirical case histories that relate long-term northern bobwhite (Colinus virginianus) population declines to changing habitat conditions are rare in the scientific literature. We examined long-term (38 years; 1955-1992) changes in habitat conditions and bobwhite population trends at Copiah County Wildlife Management Area (CCWMA), Mississippi. Between 1955 and 1992, proportion of CCWMA in old fields declined from 70% to 20%, proportion of area in forest with <50% canopy cover declined from 18% to 0%, and proportion of forests with >50% canopy cover increased from 19% to 78%. During the same 38-year period, bobwhite density declined from 0.48 birds/ha to 0.08 birds/ha. Harvest rate declined from 1.76 birds/hunter day in 1955 to 0.5 birds/hunter day in 1992

Northern bobwhite populations have been declining throughout most of their range. Population declines imply that mortality consistently exceeds production and therefore a thorough understanding of the causes and temporal distribution of mortality is important. We present Heisey-Fuller estimates of monthly survival and cause-specific mortality rates of 1,001 radio-marked bobwhite on private lands in northern Missouri during 1989-1992. Monthly survival rate was lowest during the hunting season (November-January)(jc = 0.639), intermediate during the breeding season (May-September) (x = 0.815) and highest during the remainder of the year (October, March-April)(jc = 0.858). Females had significantly lower (P = 0.027) survival rate (0.552) than males (0.653) during the first month of the hunting season. Males had lower (P = 0.06) survival rate than females during July (0.710 vs. 0.887). Avian and mammalian predators were primary causes of natural mortality.

Some land managers think that the effects of increasing numbers of deer (Odocoileus virginianus) on habitat have been a factor in the long-term decline of northern bobwhite (Colinus virginianus) populations in the Southeast. We studied effects of deer browsing of selected quail foods in northern Florida on an area managed for quail and supporting a population of about 40 deer/km2. Periodic observations of permanently tagged plants indicated use of some taxa by deer, especially in early autumn. In sample quadrats from which deer were excluded, seed production was greater for partridge peas (Cassia nictitans and C. fasciculata) (P = 0.096) and butterfly pea (Centrosema virginiana) (P = 0.007) than in quadrats open to deer. Also, vegetative cover was greater inside exclosures for partridge peas (P = 0.013) and beggarweeds (Desmodium spp.) (P = 0.009).

In the southeastern United States northern bobwhite (Colinus virginianus) populations have declined rapidly during the past 3 decades. Deterioration of suitable habitat conditions has been suggested as a major cause of this decline. Habitat management efforts typically focus on production of fall/winter foods (i.e., seeds). Management efforts are seldom directed at production of breeding season foods (i.e., arthropods) for bobwhites. Therefore, we used a D-Vac insect vacuum to measure effects of strip disking on arthropod resources in old fields managed for northern bobwhites during the 1992 and 1993 breeding seasons. Disked fields contained greater arthropod biomass than undisked fields. Greater arthropod biomass was supported primarily by increases in phytophagous insects. Arthropod biomass did not differ between years.

Little information is available on the success of single-parent mourning dove (Zenaida macwura) nests after 1 September, the time period when hunting usually begins. To answer this question, data from single-parent nests were collected on the Texas A&M University Campus during September 1979. Data for 44 nests where 1 parent was removed were compared to 31 control nests. Success of single-parent nests with young 0-6 days of age was reduced. We did not observe significant reduction in success for nests containing young exceeding 6 days of age, or for single male versus single female parents. Most known mortality was from weather or avian predators. While no eggs from single-parent doves produced fledged young, some hatched but were subsequently lost to weather. Most control eggs also were lost to weather.

Although numerous studies have been conducted on food habits of the Northern bobwhite (Colinus virginianus), there is a paucity of information on food items taken by quail on severely-disturbed land bases. To collect more information, crop content analysis was conducted on 1,015 hunter-harvested northern bobwhites from 1982 to 1992. Quail were collected from disposal areas created by the deposition of spoil material during construction of the Tennessee-Tombigbee Waterway. These disposal areas are classified as severely-disturbed due to edaphic and pedogenic conditions. Vegetative cover was monitored during the study on disposal areas where bobwhites were collected. The seeded legume, sericea lespedeza (Lespedeza cuneata), dominated these sites with ground coverages of ≥60% for most study years. Naturally-colonizing food plants, such as Lespedeza striata, exhibited mean coverages <5% for each study year.

Using radio collars on black bears (Ursus americanus) has greatly increased our knowledge of this species. Excessive body growth of collared bears can result in neck injuries from radio collars, however; therefore, techniques have been developed to resolve such problems. Three types of breakaway devices were used on black bear radio collars in Florida. Forty-eight collars (Telonics breakaway, TV = 10; surgical tubing breakaway, JV = 11; leather spacer breakaway, TV = 27) were placed on bears in the Apalachicola and Ocala National Forests. Collar life averaged 163 ± 22 (SE) days (TV = 4), 185 ± 21 days (TV = 7), and 399 ± 48 days (TV = 10) for surgical tubing, Telonics, and leather space types, respectively. Collars with leather spacers lasted significantly longer (P < 0.001) than other collar types. No neck injuries were observed during the study.

Bait stations have proven effective in monitoring black bear (Ursus americanus) population changes. However, little research has been conducted to investigate influences of habitat characteristics on bait station visitations. Vegetation (N = 20) and land-use (N = 3) variables were evaluated at bait stations visited (N = 27) and not visited (N = 25) by black bears on 2 islands in Arkansas. Overstory, midstory, and understory vegetation composition were assessed by nested circular plots centered on bait stations. Distance to nearest road and type and time since last timber harvest also were recorded for each site. Vegetative composition between visited and not visited bait stations did not differ (MRPP, P — 1.00) indicating that site-specific variables measured had no influence on probability of a bait station being visited.

Yearly food supplies influence black bear (Ursus americanus) harvest and nuisance behavior. During 1987-1990, gypsy moth (Lymantria dispar) infestation in northwestern Virginia, especially in Shenandoah National Park (SNP), resulted in widespread defoliation, acorn failure, and subsequent alterations in bear behavior. We believed canopy opening and especially acorn failure would lead to increased hunter harvest and nuisance behavior in defoliated regions of Virginia. In the defoliated region of Virginia, 138 ± 12 bears/yr and 220 ± 12 bears/yr were harvested before (1980-1986) and during infestation, respectively (P = 0.03). In addition, proportion of females harvested in this region increased from 34% to 40% (P = 0.09). These increases may have resulted from increased bear movements in fall and, hence, greater bear susceptibility to hunting during infestation.

Black bear (Ursus americanus) distribution and habitat quantities were estimated for the Coastal Plain region of the southeastern United States. Bears are imperiled in the southeastern Coastal Plain primarily because of habitat loss. Accordingly, this paper focuses on bear habitat in the region. Resident bear populations are scattered across the Coastal Plain. They occupy an estimated 67,791 km2. The current distribution, a consequence of habitat loss, represents a 93% range reduction from historic levels. The greatest quantity of habitat supporting resident populations occurs in Florida (30,773 km2) and North Carolina (18,700 km2). Most (76%) bear habitat in the Coastal Plain is privately owned. Six of the 10 states in the region contain large blocks of forested areas (>200 km2) that are without bears; these are potential stocking sites. The largest block of potential range occurs in eastern Texas. Management implications of the distribution are discussed.

Developing black bear (Ursus americanus) conservation strategies for the southeastern United States is critical because of increasing habitat fragmentation. Ecological and demographic data collected from a black bear population in Great Dismal Swamp has provided insight into development of these strategies. One strategy is maintaining large, contiguous forest tracts with minimal human disturbance. Identification, maintenance, and enhancement of key habitat patches, such as pocosins and mesic islands, also are important. Remote sensing data can identify corridors among relatively disjunct bear populations that should be targeted for conservation. Population data also suggest the role of Great Dismal Swamp and other large tracts of occupied bear range in this region as reservoirs for black bear reproduction and dispersal into smaller, more fragmented habitats. Research on dispersal and gene flow is essential to determine the true degree of isolation among coastal populations.

A map of land cover derived from Landsat Thematic Mapper data was used to quantify land cover characteristics around Florida Breeding Bird Survey Routes. Abundances of 54 species of birds were compared with land cover characteristics. Approximately 15 species showed biologically meaningful correlations, and in some cases the variation explained by land cover characteristics was quite large (e.g., >40%). There were also several anomalous correlations. Although Landsat data can be used to identify the habitat features sought by some species, more detailed information is needed for many species of nongame birds. Developing standardized procedures for collecting and processing habitat information along Breeding Bird Survey routes should be a top priority.

We investigated the contents of 590 common barn-owl (Tyto albapranticola) pellets from 5 locations in the Georgia Piedmont and 1 in the Upper Coastal Plain. Five genera of rodents, 4 insectivores, 1 lagomorph, and at least 2 bird species were identified in the pellets. Hispid cotton rats (Sigmodon hispidus) predominated in pellets at the Piedmont sites while least shrews (Cryptotisparva) were the most abundant prey species in pellets at the Coastal Plain site.

Feeding stations were established on a ranch in south Texas to determine seasonal seed preferences of visiting bird species. Seed preferences varied seasonally for most birds with black-oil sunflower, cracked corn, and milo accounting for the majority of seed consumed and for the greatest number of bird species attracted. If more than 1 type of seed is offered, then several feeders should be used to avoid competition between species and reduce wasted seeds.

We conducted extensive pitfall trapping surveys for soricids in the Blue Ridge and upper Piedmont portions of the Chattahoochee National Forest in northern Georgia from 3 July 1993 to 3 January 1994. In 76,103 trapnights, we collected 1,456 specimens representing 15 species. Survey efforts resulted in establishing the southernmost North American collection localities for Sorex cinereus, S. fumeus, S. hoyi, Clethrionomys gapperi, and Peromyscus maniculatus. Sorex cinereus and C. gapperi are restricted to high elevation, mesic forest communities in the Blue Ridge, while S. longirostris, Cryptotis parva, Reithrodontomys humulis, and Peromyscus leucopus are restricted to the Upper Piedmont and lower elevations in the Blue Ridge. We report the first record of Cryptotis parva and new records of S. longirostris from the Blue Ridge. Sorex fumeus and Blarina brevicauda are widespread and abundant throughout the Blue Ridge and the Upper Piedmont.

The composition and diversity of redeveloping plant communities, along with associated small mammal and bird communities, were compared on hexazinone and mechanically-prepared sites at 2, 3, and 5 years post-treatment. Diversity of herbaceous vegetation was higher on the mechanically-prepared sites at 5 years post-treatment, while the diversity of woody vegetation did not differ in any of the age classes. Small mammals were sampled by removal trapping and birds by circular census plots. On the 2-year post-treatment sites, small mammal capture rates were greater on the mechanically-prepared areas than on the hexazinone sites. Capture rates and species composition did not differ between treatments on the 3- and 5-year post-treatment sites. Bird diversity was higher on the hexazinoneprepared sites at 2 and 3 years post-treatment and apparently was related to greater numbers of residual snags.

The need for Nuisance Wildlife Control (NWC) is changing with the increase in urban population in the United States. A survey of the states and territories of the United States in regard to NWC was assessed. A comprehensive model emerged for a system of private operators. The key elements are education, administrative oversight, sensitivity to animal welfare and human needs, and development of private enterprise while maintaining wildlife agency control.

As a result of agricultural, urban, and industrial development of native thorn-shrub communities in the Lower Rio Grande Valley, < 1% of south Texas supports habitat for the endangered ocelot (Felis pardalis). We evaluated techniques that could facilitate restoration of ocelot habitat. Texas ebony (Pithecellobium flexicaule), granjeno (Celtis pallidd), lotebush (Ziziphus obtusifolia), and whitebrush (Aloysia gratissima) seedlings were planted in 3 4-ha plots at Laguna Atascosa National Wildlife Refuge, Cameron County, Texas. Mean stem height did not differ (P > 0.05) among species for the clipped-weeded, clipped-nonweeded, and control treatments. All species of seedlings planted in 60-cm tall plastic shelters grew taller than seedlings planted in 30-cm plastic shelters (P < 0.01). Control granjeno seedlings had lower survival than the non-weeded 30-cm shelter and the weeded and non-weeded 60-cm shelter treatments (P < 0.01).

A survey in North Carolina was undertaken to determine the distribution and relative abundance of the Greensboro burrowing crayfish (Cambarus catagius). Public input was solicited for search locations and a methodology was devised to capture the species. The species was collected at 16 locations in North Carolina from Greensboro to Lexington and southeast to the Uwharrie National Forest. Many other observational data on the species, its habitat, and its relative abundance were also collected.

From 1986 through 1994, the North Carolina Wildlife Resources Commission (NCWRC) has surveyed the state for freshwater mussel populations. To date, 215 extant populations of 27 state designated endangered, threatened, or special concern species have been documented, including 46 good, 49 fair, and 120 poor quality populations.