'High' wallabies blamed for Aussie crop circles
"We have a problem with wallabies entering poppy fields, getting as high as a kite and going around in circles," The Mercury newspaper quoted Giddings as telling the hearing. "Then they crash. We see crop circles in the poppy industry from wallabies that are high."
http://www.sfgate.com/cgi-bin/article.cgi?f=/n/a/2009/06/25/international/i004500D56.DTL