On40Acres

Native Oaks Are Keystone Species

Infographic comparing Ginkgo (non-native) and Valley Oak (native) trees, with bird-feeding statistics: a review of 165 urban ecology studies found native plants better in 120 of them, and a Sacramento Valley oak study found migratory birds used oaks 74% of the time despite being only 15% of canopy.
Not all trees are equal. One native oak can provide far more habitat value than many non-native trees.

Not all trees are equal.

  • Native oaks support hundreds of caterpillar species.
  • Migratory birds use native oaks disproportionately.
  • Oaks provide food, nesting sites, shade, and habitat throughout the year.
  • One mature native oak can support far more biodiversity than many ornamental trees.