Number of remote collar removal attempts at each study site (using handheld ultra-high radio signal transmitters, Iridium web service, and timed-release).

Attempts resulted in either a failed attempt, where the collar failed to release after the drop command was sent, or a successful drop where the collar came off the animal. Number of failed and successful attempts are shown, with percentage of all attempts made at that site in parentheses. Note that repeat attempts were made to drop some horse collars. Collars that were not dropped successfully were removed when individuals came in during the gather at the end of the study.