....the only birds other than penquins known to do so. Doug Hardy has spent a lot of time setting up and maintaining remote weather stations on mountain-top glaciers with Ray Bradley (UMass.) and Lonnie Thompson (Ohio State, where he studies ice cores that suggest Global Warming is human-induced [sorry], nicely summarized in Mark Bowen's book "Thin Ice" [2005, Henry Holt, NY]). Doug's 12-yr old son is a co-author on the peer-reviewed "ice-bird" paper. Not sure how long this link will stay up as a freebie.
http://www.boston.com/news/local/articles/2008/11/17/paper_is_a_feather_in_young_birders_cap/
http://www.boston.com/news/local/articles/2008/11/17/paper_is_a_feather_in_young_birders_cap/