Does anyone know about observations of bees visiting a feeder after walking through a tube (Bisetzky 1957). I can only find the paper by Bisetzky (1957) and a paper by Goncalves (1969). Did anyone observe waggle dances after a forager walked through a tube ? Did anyone try to repeat the observations of Bisetzky ? Harald Esch Department of Biology University of Notre Dame Notre Dame, Indiana 46556 E-mail [log in to unmask]