The operation concluded on November 13, according to the daily reports, with 1,970 horses gathered, 10 deaths and 197 horses returned, including 100 mares treated with fertility control.
The incident began on October 10 and the gather target was 2,400.
The number of horses shipped was 1,404, leaving 359 unaccounted-for animals.
A news release said the gather could continue at a later date to return wild horse populations to appropriate management levels.
Western Horse Watchers Association 