The following trees and shrubs provide food for birds in winter. It grows 40 to 60 feet tall. The pea-sized fruit of the hackberry eventually become dark purple and are an excellent source of food for many birds. Initially, the fruit are hard and marble-like. They gradually become palatable to birds after freezing and thawing several times.
Birds tend to ignore the fruit of a few crabapple varieties.
Crabapples are extremely variable in size and growth habit. However, most varieties attain a height of 15 to 25 feet. Hawthorns produce white flowers in spring. In fall, the fruit turn red and persist into winter, providing food for birds. Both hawthorns grow to a height of 20 to 30 feet.