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Eastern
Wild Turkey Habitat Management
The wild turkey
is an omnivore with its annual diet consisting of 90% plant and
10% animal matter. Mast, fruits, seeds, greens and agricultural
crops are the principal plant food groups consumed. Acorns make
up about one third of their diet. Soft-mast producing shrubs
like wild grape, dogwood, black gum, wild cherry, hackberry and
similar species are also important foods, particularly when hard
mast crops fail. Grasses and seeds are important winter and
spring foods, while insects comprise the majority of the summer
diet for young turkey poults.
A mixture of
forested and open lands provides the best turkey habitat. Open
lands should comprise 10-50 % of the area. The size and
distribution of open areas is important with a system of well
dispersed smaller clearings being most favorable. Turkeys
typically do not use the center of clearings larger than 20
acres. Turkeys prefer mature woodlands comprised of a mixture of
tree species with open understories growing with herbaceous (nonwoody)
plants. Turkeys usually select areas with dense brush, tall
grass and fallen tree tops (ie. recent clear cuts) for nesting.
Forested areas with moderate herbaceous understories, forest
clearings, forest savannahs, power-line right of ways, old home
sites, and spring seeps are important brood habitat. These areas
usually have an abundance of insect and the moderate vegetation
which allows the young poults to move freely. Grazed woodlots
may improve the suitability of some forest stands that are
otherwise too dense for wild turkey, but grazing also has the
potential to damage other forest resources and should be
conducted carefully! Brood range can be created in forested
stands by thinning to a basal area of 40-60 and control burning
the thinned stand.
Timber lands
should be managed to optimize hard and soft mast production and
to provide a dispersed system of permanent forest openings. The
even-aged harvest method is recommended to maintain oak
regeneration, to create open understory conditions and to
provide stand diversity. Long timber rotations are recommended
to provide a high percentage of trees of mast producing age.
Because white oaks live longer, longer rotation ages for this
group are recommended.At least 60 % of the trees on your
property should be in mast producing age (50+ years). Rotations
from 120-200 years are recommended for wild turkey, depending on
the forest type. A forest management plan to balance age classes
should offer a mosaic of older and young stands. Timber
operations should be dispersed and not concentrated. One example
would be a rotation age of 120 years with 8% of the timber
removed every 10 years. Clearcutting and modified shelterwood
cuts are common silvicultural methods to ensure adequate oak
regeneration in Virginia. The size of regeneration cuts should
range from 5-20 acres and should be narrow with an undulating
perimeter. Planning some cuts in the proximity to open areas may
enhance reproduction. Grape arbors should be encouraged and
grape vine control should not be practiced. In Timber Stand
Improvement practices, shrubs beneficial to wild turkey should
be retained (ie. dogwood, grape, black gum, American hornbeam,
serviceberry, crabapple and others). Spring seeps should be
protected and timber should not be harvested within a zone of at
least 100' of a seep. Pine plantations with short rotations
offer poor turkey range. Conversion of hardwoods to pine is also
considered detrimental to wild turkey populations. However,
small pine plantings in clumps < 1/2 acre in size may increase
habitat diversity for turkey because the provide thermal cover
and roost sites. Pine stands that have been control burned are
also used by turkeys.
All existing
open areas with grass/forb/legume mixtures should be maintained
for young turkeys. Mowing and other mechanical means should be
employed to keep these habitats in a condition featuring
moderate herbaceous growth and high insect levels. Fertilizing
and liming are generally not necessary as heavy forage
production prohibits turkey use. Disking fields encourages
native plant diversity and generally improves habitat
suitability as brood range. Mowing and disking should not be
conducted during the nesting season (May-June). For brood range
roads should be daylighted or cut back 50-75' to increase
sunlight and be planted with a grass/forb/legume mixture.
Prohibit vehicle access to maintain turkey use. The quality of
large pastures and clearings can be improved by planting
hedgerows of shrubs and trees to provide corridors to the
interior of these areas. These hedgerows will provide access to
the unused habitats and will also increase mast availability and
diversity. Dogs have been identified as serious predators of
wild turkeys in the southeast and therefore should be controlled
during critical nesting and brood rearing seasons. |