Distances travelled by feral horses in ‘outback’ Australia

Hampson, B.A., de Laat, Melody A., Mills, P.C., & Pollitt, C.C. (2010) Distances travelled by feral horses in ‘outback’ Australia. Equine Veterinary Journal, 38(Supp), pp. 582-586.

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Reasons for performing study: The distance travelled by Australian feral horses in an unrestricted environment has not previously been determined. It is important to investigate horse movement in wilderness environments to establish baseline data against which the movement of domestically managed horses and wild equids can be compared.

Objectives: To determine the travel dynamics of 2 groups of feral horses in unrestricted but different wilderness environments.

Methods: Twelve feral horses living in 2 wilderness environments (2000 vs. 20,000 km2) in outback Australia were tracked for 6.5 consecutive days using custom designed, collar mounted global positioning systems (GPS). Collars were attached after darting and immobilising the horses. The collars were recovered after a minimum of 6.5 days by re-darting the horses. Average daily distance travelled was calculated. Range use and watering patterns of horses were analysed by viewing GPS tracks overlaid on satellite photographs of the study area.

Results: Average distance travelled was 15.9 ± 1.9 km/day (range 8.1–28.3 km/day). Horses were recorded up to 55 km from their watering points and some horses walked for 12 h to water from feeding grounds. Mean watering frequency was 2.67 days (range 1–4 days). Central Australian horses watered less frequently and showed a different range use compared to horses from central Queensland. Central Australian horses walked for long distances in direct lines to patchy food sources whereas central Queensland horses were able to graze close to water sources and moved in a more or less circular pattern around the central water source.

Conclusions: The distances travelled by feral horses were far greater than those previously observed for managed domestic horses and other species of equid. Feral horses are able to travel long distances and withstand long periods without water, allowing them to survive in semi-arid conditions.

Impact and interest:

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22 citations in Web of Science®

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ID Code: 59594
Item Type: Journal Article
Refereed: Yes
Keywords: Horse, Feral Horses, GPS, Distance, Water Frequency
ISSN: 0425-1644
Divisions: Current > Schools > School of Earth, Environmental & Biological Sciences
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 02 May 2013 22:52
Last Modified: 10 Jul 2013 05:58

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