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Cross Timbers Ecoregion
Wildlife Management Plan for Brown County, Texas
Brown County sits at the convergence of 6 Texas ecoregions, with 66 documented wildlife species.
Intelligence Snapshot
Regulatory Complexity
USFWS has designated critical habitat for 5 species in Brown County, one of the higher concentrations in the state. Critical habitat has been designated for 5 species within county boundaries. Federal review may be triggered by land use changes in designated areas. The county spans 6 ecoregions. A plan written for the wrong landscape position could prescribe inappropriate intensity standards or target the wrong species assemblage. A properly calibrated plan accounts for these constraints. A generic plan does not.
Brown County Ecological Profile
Brown County's 944 square miles contain 14,524 documented oil and gas wells alongside post oak woodlands interspersed with mixed-grass prairie, creating a landscape where industrial infrastructure and ecological management coexist at close range. Today, this region encompasses some of the best wild turkey and white-tailed deer habitat in Texas, with a diverse mix of oak mottes, tallgrass openings, and creek-bottom hardwoods. Lake Brownwood State Park provides a nucleus of protected habitat and a reference landscape for private land management in the surrounding area.
Management in the Cross Timbers balances maintaining the post oak overstory canopy with improving understory conditions for wildlife. Brush management targets eastern red cedar, which has invaded aggressively in the absence of fire, shading out the native grasses and forbs beneath the oaks. Mechanical removal of cedar using skid-steer mounted shears, followed by prescribed fire, restores the open, savannah-like structure that defines healthy Cross Timbers woodland. Food plots in prairie openings should emphasize native warm-season grasses like little bluestem and sideoats grama, supplemented with annual plantings of iron clay cowpeas and grain sorghum for turkey and deer. Water development is critical during the dry months, with small stock tanks and solar-powered wildlife waterers placed at 300 to 400 yard intervals across larger properties.
Transitional Ecoregion
Brown County intersects 6 distinct ecoregions: Central Great Plains, Cross Timbers, East Central Texas Plains, Edwards Plateau, Southwestern Tablelands, and Texas Blackland Prairies. This is not a minor detail. A plan calibrated to the Central Great Plains would prescribe the wrong intensity standards, the wrong target species, and the wrong management timeline for a property in the Texas Blackland Prairies zone. Property-specific ecoregion classification is the first step in any credible plan.
Soil Conditions
Soils range from shallow, rocky Doss and Purves series on limestone ridges to deeper Windthorst and Bonti sandy loams in the post oak belt, with heavy Frio clays along creek bottoms.
Fire Ecology
The Cross Timbers historically experienced fire at 3 to 7 year intervals, maintaining the open savannah structure between oak mottes. Prescribed fire is the most cost-effective tool for controlling eastern red cedar invasion.
Spans 6 ecoregions: Central Great Plains, Cross Timbers, East Central Texas Plains, Edwards Plateau, Southwestern Tablelands, Texas Blackland Prairies
The Cross Timbers supports robust populations of Rio Grande wild turkey, northern bobwhite, and white-tailed deer. Conservation priorities include Texas horned lizard, which has declined due to fire ant pressure and habitat fragmentation. The region also provides nesting habitat for black-capped vireo along rocky, scrubby hillsides and painted bunting in edge habitat between woodlands and prairies. Several bat species, including cave myotis and eastern red bat, use the region's rock outcrops and mature oak canopies. Maintaining dead snag trees and mature oaks with natural cavities is essential for cavity-nesting birds and bat roosting.
Brown County Species of Conservation Concern
TPWD records 66 species in Brown County. Birds represent the most documented group at 24 species. The county carries significant conservation obligations: 5 federally endangered species, 3 federally threatened, and USFWS critical habitat designations for 5 species. Management activities on private land must be designed to avoid incidental take. Federally listed species include whooping crane, Balcones spike, and Texas fatmucket. Whooping crane: Winters along the Texas coast at Aransas NWR and surrounding marshes.
Primary Management Targets
white-tailed deer, wild turkey, bobwhite quail
Listed Species
Winters along the Texas coast at Aransas NWR and surrounding marshes. Grain field management and wetland water levels in coastal counties affect foraging habitat. Disturbance within 1,000 feet of roosting sites is regulated.
Freshwater mussel endemic to the Edwards Plateau region. Found in spring-influenced stream reaches. Water quality and flow maintenance are primary management considerations.
Freshwater mussel endemic to central Texas rivers. Sedimentation from land clearing, impoundment, and water quality degradation are primary threats. Riparian buffers and erosion control benefit this species.
Freshwater mussel in central Texas rivers. Threats include impoundment, water quality degradation, and altered flow regimes. Riparian management and erosion control are beneficial.
Freshwater mussel in central Texas rivers including the Guadalupe and Colorado systems. Impoundment, sedimentation, and water quality degradation threaten habitat.
Inhabits dense emergent marsh vegetation. Extremely secretive and declining. Wetland drainage, mowing of marsh vegetation during nesting season, and altered hydrology are primary threats. Marsh management must maintain dense low vegetation.
Western distinct population segment is threatened. Requires large patches of mature riparian woodland (cottonwood, willow) with dense understory. Clearing riparian corridors wider than 300 feet may trigger consultation in designated critical habitat.
Freshwater mussel found in central and East Texas rivers. Sensitive to sedimentation, flow alteration, and water quality changes. Maintaining riparian vegetation and minimizing erosion are key management practices.
Inhabits dense emergent marsh vegetation. Extremely secretive and declining. Wetland drainage, mowing of marsh vegetation during nesting season, and altered hydrology are primary threats. Marsh management must maintain dense low vegetation.
Winters along the Texas coast at Aransas NWR and surrounding marshes. Grain field management and wetland water levels in coastal counties affect foraging habitat. Disturbance within 1,000 feet of roosting sites is regulated.
Freshwater mussel endemic to the Edwards Plateau region. Found in spring-influenced stream reaches. Water quality and flow maintenance are primary management considerations.
Freshwater mussel endemic to central Texas rivers. Sedimentation from land clearing, impoundment, and water quality degradation are primary threats. Riparian buffers and erosion control benefit this species.
Freshwater mussel found in central and East Texas rivers. Sensitive to sedimentation, flow alteration, and water quality changes. Maintaining riparian vegetation and minimizing erosion are key management practices.
Freshwater mussel in central Texas rivers. Threats include impoundment, water quality degradation, and altered flow regimes. Riparian management and erosion control are beneficial.
Freshwater mussel in central Texas rivers including the Guadalupe and Colorado systems. Impoundment, sedimentation, and water quality degradation threaten habitat.
Depends on harvester ant colonies for food. Fire ant suppression and native grassland restoration directly benefit this species. Listed as state threatened.
Source: Texas Parks & Wildlife Department RTEST Database; U.S. Fish & Wildlife Service Critical Habitat Designations
Cross Timbers Wildlife Management Standards
Management in Brown County targets eastern red cedar, which has invaded aggressively under fire suppression. Mechanical removal followed by prescribed fire restores the open savannah structure beneath the post oak canopy. Because the county spans 6 ecoregions, the applicable intensity standards depend on where the property sits. For the Cross Timbers portion, TPWD requires 15 to 20 minimum acres, 20% brush management, and annual census documentation (34 TAC Section 9.2002). Primary targets are white-tailed deer, wild turkey, and bobwhite quail. Practice recommendations should reflect each property's specific landscape position within the county.
These are the intensity thresholds your plan must meet for the Cross Timbers ecoregion. Your county appraisal district will verify compliance against these minimums. A plan that does not address them risks denial of your wildlife management valuation. For a complete overview of the seven management pillars, see the management pillars guide.
In Brown County, the primary target is eastern red cedar, which has invaded under fire suppression.
Food plots must provide nutritional supplementation for target species. The minimum size and density are set by ecoregion to reflect carrying capacity.
Feeder placement and protein content are auditable. The aflatoxin threshold (20 ppb) is a compliance requirement, not a suggestion.
Fire ant suppression directly supports native harvester ant populations, the primary food source for Texas horned lizard and other ground-foraging species.
Brown-headed cowbirds are brood parasites that reduce nesting success of songbirds. The minimum applies to properties where cowbird trapping is selected as a management activity.
The burn rotation percentage applies over the full plan period. Properties that cannot burn due to WUI constraints must document the limitation and substitute equivalent mechanical treatment.
Nest box density is based on territory size of target cavity-nesting species. Boxes must be monitored and maintained annually.
Source: TPWD 34 TAC Section 9.2002, Comprehensive Wildlife Management Planning Guidelines
Water Resources
MIDDLE TRINITY GROUNDWATER CONSERVATION DISTRICT regulates groundwater in Brown County, with permitting requirements for new wells.
Conservation Infrastructure
Lake Brownwood State Park provides protected Cross Timbers habitat and serves as a reference landscape for private land management in the county. TPWD manages McGillivray and Leona McKie Muse WMA and Paul and Toni Fox Burns WMA in the county, where land managers can observe demonstrated management practices applicable to their own properties.
Infrastructure
Brown County has substantial oil and gas infrastructure: 14,524 documented wells across 18 categories and 853 pipeline segments recorded by the Railroad Commission. 169 orphan wells are on the Railroad Commission's plugging priority list.
6 ecoregions. 5 endangered species. Brown County's complexity is the plan's first constraint.
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6 ecoregions. 66 documented species. Brown County's ecological complexity means the plan has to be specific to your property's landscape position. Calibrated to Cross Timbers standards.
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