- Wherever trees are established, wildlife and other plants follow.
- Trees and associated plants provide shelter and food for a variety of birds and small animals.
- The presence of trees creates an environment that allows the growth of plants that otherwise would not be there, increasing food varieties for wildlife.
- Lowest bird diversity is in areas of mowed lawn — highest in area of large trees, greatest tree diversity, and brushy areas.
- Highest native bird populations are
in areas of highest native plant populations.
- Trees are living systems that interact with other living things in sharing and recycling resources — as such, trees are living centers where living thing congregate and are concentrated.
The National Wildlife Federation recognized the benefits of trees in sustaining wildlife by certifying homes, schools and community settings as Certified Wildlife Habitats.