Author: Robert Scott Lutz
Publisher:
ISBN:
Category : Wild turkey
Languages : en
Pages : 104
Book Description
Habitat use and reproductive success by Merriam's wild turkey (Meleagris gallopavo merriami) were studied in Wasco County, Oregon, during 1981-82. This low density turkey population selectively used forested cover types characterized by a variety of structural features, species, and age classes. They avoided monotypic forested cover types, used non-forested cover types in proportion to their availability, and never used forested cover types with structure simplified by logging activities. Reproductive success and nesting habitat were described for 25 Merriam's wild turkey hens. A higher proportion of adults than yearlings attempted to nest (75 vs. 25%) and were more successful (90 vs. 25%). Nests were located in 5 of 14 available cover types; only thinned, mixed conifer was used more than it occurred. Thinned, mixed conifer stands contained 52% of the nests, of which 82% were successful. Two measures of vegetative screening (shrub density and visual obstruction at 0.5 m) were significantly greater at sites used for nesting than at random sites. Characteristics of trees and cover types in which Merriam's wild turkeys roosted were described for 36 roosts used by hens during winter, spring, and summer. Four of 14 cover types were used for roosting; only mature, mixed conifer was used significantly more than it occurred on the study area. Seasonal differences in roost characteristics (number of trees/site, canopy cover, slope, and DBH) were attributed to flock size and composition. I suggest that complexity both within and among cover types is an important component of habitat for Merriam's wild turkeys, which should be considered in the evaluation of potential release sites and in habitat management plans for existing populations. I recommend creating nesting habitat by thinning pole-size stands in the Douglas-- fir (pseudotsuga menziesij) zone and leaving slash in stands. Additionally, adult rather than yearling hens should be released in transplant operations.
Selected Life History Aspects and Habitat Use by Merriam's Wild Turkeys in Oregon
Author: Robert Scott Lutz
Publisher:
ISBN:
Category : Wild turkey
Languages : en
Pages : 104
Book Description
Habitat use and reproductive success by Merriam's wild turkey (Meleagris gallopavo merriami) were studied in Wasco County, Oregon, during 1981-82. This low density turkey population selectively used forested cover types characterized by a variety of structural features, species, and age classes. They avoided monotypic forested cover types, used non-forested cover types in proportion to their availability, and never used forested cover types with structure simplified by logging activities. Reproductive success and nesting habitat were described for 25 Merriam's wild turkey hens. A higher proportion of adults than yearlings attempted to nest (75 vs. 25%) and were more successful (90 vs. 25%). Nests were located in 5 of 14 available cover types; only thinned, mixed conifer was used more than it occurred. Thinned, mixed conifer stands contained 52% of the nests, of which 82% were successful. Two measures of vegetative screening (shrub density and visual obstruction at 0.5 m) were significantly greater at sites used for nesting than at random sites. Characteristics of trees and cover types in which Merriam's wild turkeys roosted were described for 36 roosts used by hens during winter, spring, and summer. Four of 14 cover types were used for roosting; only mature, mixed conifer was used significantly more than it occurred on the study area. Seasonal differences in roost characteristics (number of trees/site, canopy cover, slope, and DBH) were attributed to flock size and composition. I suggest that complexity both within and among cover types is an important component of habitat for Merriam's wild turkeys, which should be considered in the evaluation of potential release sites and in habitat management plans for existing populations. I recommend creating nesting habitat by thinning pole-size stands in the Douglas-- fir (pseudotsuga menziesij) zone and leaving slash in stands. Additionally, adult rather than yearling hens should be released in transplant operations.
Publisher:
ISBN:
Category : Wild turkey
Languages : en
Pages : 104
Book Description
Habitat use and reproductive success by Merriam's wild turkey (Meleagris gallopavo merriami) were studied in Wasco County, Oregon, during 1981-82. This low density turkey population selectively used forested cover types characterized by a variety of structural features, species, and age classes. They avoided monotypic forested cover types, used non-forested cover types in proportion to their availability, and never used forested cover types with structure simplified by logging activities. Reproductive success and nesting habitat were described for 25 Merriam's wild turkey hens. A higher proportion of adults than yearlings attempted to nest (75 vs. 25%) and were more successful (90 vs. 25%). Nests were located in 5 of 14 available cover types; only thinned, mixed conifer was used more than it occurred. Thinned, mixed conifer stands contained 52% of the nests, of which 82% were successful. Two measures of vegetative screening (shrub density and visual obstruction at 0.5 m) were significantly greater at sites used for nesting than at random sites. Characteristics of trees and cover types in which Merriam's wild turkeys roosted were described for 36 roosts used by hens during winter, spring, and summer. Four of 14 cover types were used for roosting; only mature, mixed conifer was used significantly more than it occurred on the study area. Seasonal differences in roost characteristics (number of trees/site, canopy cover, slope, and DBH) were attributed to flock size and composition. I suggest that complexity both within and among cover types is an important component of habitat for Merriam's wild turkeys, which should be considered in the evaluation of potential release sites and in habitat management plans for existing populations. I recommend creating nesting habitat by thinning pole-size stands in the Douglas-- fir (pseudotsuga menziesij) zone and leaving slash in stands. Additionally, adult rather than yearling hens should be released in transplant operations.
Wildlife Review
Plant association and management guide for the Ponderosa pine, Douglas-fir, and Grand fir zones
Final Report on Merriam's Wild Turkey Habitat Use and Movements
Author: John A. Crawford
Publisher:
ISBN:
Category : Wild turkey
Languages : en
Pages : 78
Book Description
Publisher:
ISBN:
Category : Wild turkey
Languages : en
Pages : 78
Book Description
Habitat Use and Productivity of Rio Grande Wild Turkey Hens in Southwestern Oregon
Author: Thomas Wright Keegan
Publisher:
ISBN:
Category : Wild turkey
Languages : en
Pages : 162
Book Description
Publisher:
ISBN:
Category : Wild turkey
Languages : en
Pages : 162
Book Description
The Great Basin Naturalist
American Doctoral Dissertations
Author:
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 768
Book Description
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 768
Book Description
Life History and Habitat Utilization of Merriam's Turkey in Southwestern Utah
Author: Fred C. Bryant
Publisher:
ISBN:
Category : Merriam's turkey
Languages : en
Pages : 178
Book Description
A study of the Merriam's wild turkey was conducted March 1972 to August 1973 in southwestern Utah to determine the life history and habitat utilization. Using transects, bio-telemetry, and observational techniques, information on flocking, hen to poultry and sex ratios, and approximate dates for spring dispersal, nesting, and hatching was obtained. Turkey observations in relation to habitat variables were used to determine habitat utilization. Except during the spring mating season, male flocks remained apart from other turkeys. Hen flocks in fall and winter consisted of adult hens and juveniles of both sexes. Males dispersed from winter flocks in March, and those that became harem gobblers attracted not more than 3 hens. Egg-laying probably took place from mid-April to mid-May and hatching from mid-May to mid-June. A drop in hen to poultry ratios from 1:2.2 in 1972 to 1:0.7 in 1973 was attributed to harsh spring weather. Hens comprised an estimated 60 percent of the population during the study period. Turkeys utilized a fall-winter-early spring habitat of mountain brush and scattered ponderosa pine. Late spring use was associated with a ponderosa pine or aspen-mixed-conifer habitat type. Broods highly used glades dominated by an aspen over story with intermingling mixed-conifer, while a male flock used mixed conifer clearings at 10,000 feet elevation. The upper and lower limits of turkey range on the study area were 10,000 and 6,000 feet, respectively. Turkeys began spring migration in April and fall migration in late September or early October.
Publisher:
ISBN:
Category : Merriam's turkey
Languages : en
Pages : 178
Book Description
A study of the Merriam's wild turkey was conducted March 1972 to August 1973 in southwestern Utah to determine the life history and habitat utilization. Using transects, bio-telemetry, and observational techniques, information on flocking, hen to poultry and sex ratios, and approximate dates for spring dispersal, nesting, and hatching was obtained. Turkey observations in relation to habitat variables were used to determine habitat utilization. Except during the spring mating season, male flocks remained apart from other turkeys. Hen flocks in fall and winter consisted of adult hens and juveniles of both sexes. Males dispersed from winter flocks in March, and those that became harem gobblers attracted not more than 3 hens. Egg-laying probably took place from mid-April to mid-May and hatching from mid-May to mid-June. A drop in hen to poultry ratios from 1:2.2 in 1972 to 1:0.7 in 1973 was attributed to harsh spring weather. Hens comprised an estimated 60 percent of the population during the study period. Turkeys utilized a fall-winter-early spring habitat of mountain brush and scattered ponderosa pine. Late spring use was associated with a ponderosa pine or aspen-mixed-conifer habitat type. Broods highly used glades dominated by an aspen over story with intermingling mixed-conifer, while a male flock used mixed conifer clearings at 10,000 feet elevation. The upper and lower limits of turkey range on the study area were 10,000 and 6,000 feet, respectively. Turkeys began spring migration in April and fall migration in late September or early October.
Index to American Doctoral Dissertations
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 1252
Book Description
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 1252
Book Description
Reproductive Performance and Habitat Use of Rio Grande Wild Turkeys
Author: Joel A. Schmutz
Publisher:
ISBN:
Category : Wild turkey
Languages : en
Pages : 102
Book Description
Publisher:
ISBN:
Category : Wild turkey
Languages : en
Pages : 102
Book Description