Another use for RFID: tracking the flights of honey bees!
A group of honey bees were tracked by researchers using RFID tags. According to an article in RFID News, "each bee was equipped with a RFID tag - a Microsensys mic3-TAG 64-D - on the thorax carrying a unique 64-bit number, allowing the researchers to individually track the experimental bee’s flight behavior."
The researchers recorded the bees coming and going over a period of days. The full article at rfidnews.org can be found here: http://dld.bz/abZgE . There is also a link in the article to the technical paper describing the research. In addition, a close-up picture of one of the tags on a bee can be found on page 2 of the pdf file here: http://bit.ly/jaI48i