Small bird tagging tech creates new ways to study animals

Professor of ecology and evolutionary biology David Winkler found a needle in a haystack: three Ithaca tree swallows among 10 million or so overwintering in Florida this January. The coup was made possible by Winkler's development of the first lifetime-solar-powered tag for small songbirds, an invention that could revolutionize the way birds and other small animals are tracked and studied.