New Smithsonian Study Links Declines in Suburban Backyard Birds to Presence of Nonnative Plants

Read the full story from the National Zoo.

Insect-eating birds that depend on the availability of high-calorie, high-protein cuisine — namely caterpillars and spiders — during the breeding season to feed their young are finding the menu severely lacking in backyards landscaped with even a small proportion of nonnative plants, according to a new study from the Smithsonian Conservation Biology Institute. This reduction of food availability has led to a decline in the breeding success and population growth of the Carolina chickadee, the study found.

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