The state of Texas offers free assistance to communities seeking to preserve natural habitat for public enjoyment as well as maintain biodiversity. They also have programs for landowners seeking to benefit from community goals in this area.
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Wildlife
http://tpwd.texas.gov/huntwild/wild/wildlife_diversity/
Texas Parks & Wildlife Commission Awards $10.4 Million in Local Park Grants to Texas Communities - for Natural Parks, Other
Land and Water
http://tpwd.texas.gov/landwater/
Project "WILD"
Project WILD is "Wildlife in Learning Design," a Kindergarten - 12th grade environmental and conservation education program emphasizing awareness, appreciation and understanding of wildlife and natural resources. It can be used by classroom teachers, environmental educators, park and nature center personnel, and youth group leaders. It is interdisciplinary and supplementary and can be used to teach basic skills in science, social studies, language arts, math, art, music and physical education. TPWD offers workshops for educators, with an unbiased approach to basic wildlife management practices
http://tpwd.texas.gov/education/resources/project-wild