the information is stored indefinitely unless requested to be removed, but the information will never be used for any other purpose than mentioned above. sometimes it makes more sense to think of it as a wave, sometimes it makes more sense to think of it as particles. i hope that this year the birds decide to stick around. partly this is also the extent to which the news is contrary to expectations. hey i really enjoyed this article, it was very informative. also serves as a great way to cut about two weeks of instruction time out of the school year. 