Did you know that trees and birds are partners? Each depends on the other for survival and well-being. Trees offer birds food, water, shelter, and safe places to rest, communicate, and nest. In return, birds protect trees from insects, help them reproduce by spreading seeds, and fertilize the soil around their roots.

Supporting this relationship can improve the health of your yard, neighborhood, and local environment.

How Trees Support Birds

Trees are living ecosystems that offer birds resources to thrive.

Food:

Trees supply birds with an array of essential nutrients. Insects that feed on tree leaves and bark are a major source of protein. For instance, oaks and maples host caterpillars, while pine and cherry trees are home to beetles and aphids. Fruit trees such as serviceberry and holly produce berries that birds eat, especially in the winter when other food is scarce.

Many trees also produce nuts that birds rely on. Acorns are the most common tree nut eaten by birds. Nuthatches and red-bellied woodpeckers cache acorns by wedging them into bark crevices or hiding them beneath moss and lichens. Blue Jays bury them in the ground; however, about half are forgotten, eaten by animals, or left to germinate. In that way, blue jays become unintentional tree planters.

Water:

Deciduous trees with broad, cupped leaves, like oaks and maples, collect droplets from rain, fog, and dew. Small birds drink from these natural reservoirs, and hummingbirds often use them to bathe.

Shelter and Rest:

Trees offer safe havens for birds to roost and rest. Species such as cardinals, sparrows, starlings, and Carolina wrens have special tendons in their feet that lock onto branches, letting them sleep securely. Tall trees with dense foliage and cavities, such as oaks, hollies, and white pines, protect birds from predators and harsh weather.

Large trees serve as staging grounds for communal roosts, groups of migrating birds resting and refueling. These flocks use trees as “communication hubs,” singing to alert one another to threats or to share information about food sources.

Nesting:

Trees provide sites and materials for nest building—twigs, leaves, bark, and moss. Each species has its own preferences. Robins, for example, which raise two or three broods per year, build their first nest in evergreens, and later ones in leafy deciduous trees such as maples or dogwood, five to twenty-five feet off the ground. Crows, on the other hand, build their nests high in the top third of tall trees like oaks and pines.

Cavity-nesting birds depend heavily on mature trees. Primary excavators, such as red-bellied woodpeckers and northern flickers, drill their own nesting holes. Secondary nesters—chickadees, wrens, and nuthatches—make use of abandoned cavities.

How Birds Support Trees

Birds are instrumental in keeping trees healthy and propagating the next generation. By eating insects that chew leaves or bore into bark, they control pest populations. Seeds and nuts that birds drop or bury often germinate, creating new trees. Birds’ feces also enrich the soil with nutrients that support root health and overall growth.

How You Can Help

Steps you can take in your yard to support the partnership between trees and birds include:

· Protect large, mature trees. Their dense canopies and cavities are habitats for many bird species.

· Plant a variety of native trees. Native species host local insects and produce nuts and berries that regional birds prefer.

· Choose trees with seasonal food sources. Mix species that fruit at different times of year so birds have a steady supply of food.

· Leave the leaves. In the fall, allow some leaves to decompose naturally. This will improve soil quality for trees and create microhabitats for insects and worms that will attract birds.

· Reduce pesticide use. Limit use of pesticides. Healthy insect populations are vital for birds and for your trees’ long-term health.

The Rewards

Supporting trees and birds brings aesthetic, environmental, and personal benefits. You will enhance the beauty of your yard, contribute to ecological health, deepen your connection to the natural world.