In message <[log in to unmask]>, Gard Otis <[log in to unmask]> writes > Unfortunately, I am not sure what is meant by the other part of >the question concerning the "synchronised flock movement in A. >dorsata and A. cerana." Yes, I did'nt explain this very well, as Joel pointed out too. A better metaphor I guess is the 'mexican wave' they do when something like a wasp hovers near the combs or entrance. They all move their wings or bodies together producing a wave or shimmer that make them appear one unit. -- Dave Black <http://www.guildford.ac.uk/beehive>, Guildford, GU1 4RN. UK.