Greetings: I am considering a project involving the analysis, for environmental toxins, of pollen collected by bees. I keep honey bees and will probably use them to some extent in part of the project, but I am interested in utilizing other pollen collectors which might have a more limited or a least reduced range. Recently I have been trying to establish bumble-bee colonies from queens [Bombus impatiens] with some limited success. I have had some difficulty in finding literature dealing with Bombus sp. range (size, shape, effect of topography etc.). Can anyone give me any suggestions on this topic - or if not - on range determination and how it is carried out. Thank you. Sincerely yours, Brooke Oland N.S.A.C., Truro, N.S.