For birds, getting hauled out of a nest by a scientist and poked with a needle ? an increasingly common occurrence in this season of bird flu ? is pretty stressful. Some German ornithologists who study terns worried that such unpleasant encounters were biasing their research results. So taking a cue from nature, they put a tropical blood-sucking bug, Dipetalogaster maximus, on the job to do their dirty work for them.












