Native to North America
- American Elm - Ulmus americana
- Slippery Elm - Ulmus rubra
Elm Identification and Relationship with Birds
Medium to large-sized deciduous tree, ranging in height from 50 to 100 feet, with a 40 to 100-foot spread. The Elm tree blooms non-showy flowers and a seed-filled samara-shaped fruit in spring. The seeds and buds are eaten by an impressive list of birds. Elm trees also attract and host a substantial number of insects and caterpillars (which will in turn attract insectivorous birds), for this reason the Elm is a favorite of Warblers. The height and thick foliage of an Elm tree make it an attractive nesting location for some birds, it is a favorite of the Baltimore Oriole. Unfortunately, the Elm tree has had its population ravaged by the Dutch Elm fungus, which is a spread by bark beetles. American Elm is more susceptible to Dutch Elm Fungus than Slippery Elm, though both have been and continued to be ravaged by its presence.