By boosting dominant species such as great tits, human-provided food can make life harder for many woodland birds
Feeding birds is hard-wired into our national psyche. The apocryphal Victorian “tuppence a bag” for seed for the Trafalgar Square pigeons has morphed into a national pastime, with an estimated 17m households spending £250m a year on more than 150,000 tonnes of bird feed – enough to feed the entire breeding population of the 10 most common feeder-using bird species year-round three times over.
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