However, that doesn't mean you should approach your target hastily. There is this "RIH" (rapid incremental habituation) technique i found in a forum. Give it a read and try it out yourself. I am sure you will find it useful! Good luck!
All macro images shot with a 40D, Canon MP-E65 1X-5X Macro Lens and Canon MT-24EX Twin Flash
Canon EOS 40D 10.1MP Digital SLR Camera (Body Only)
Canon MP-E 65mm f/2.8 1-5X Macro Lens for Canon SLR Cameras
Canon MT-24EX Macro Twin Lite Flash for Canon Digital SLR Cameras