The American Robin pictured above is certainly not looking for earthworms in a mountain ash tree, but for most of us these ubiquitous birds foraging in a grassy field is another familiar sight.
Dr Rob Butler has made a study of a question that has likely puzzled many of us over the years: ” How exactly do they find the earthworms that they eat? Do they use sight or sound or …?”
Read Rob’s article here to see what he found out.
British Columbia Field Ornithologists 