Frequently Asked Questions
How are mule deer captured and monitored?
To better understand mule deer health and survival, deer are safely captured using a technique called helicopter net-gunning. This method is quick and effective, helping to minimize stress on the animals. All captures are conducted by experienced professionals in accordance with Animal Care Policies and Government of Alberta licensing requirements.
During handling, trained experts collect key biometric data such as:
- body weight
- chest girth
- body length
- rump fat and loin muscle thickness (measured using a portable ultrasound)
Biological samples—including blood, hair, nasal and oral swabs, and small pieces of skin—are also collected to assess overall health and screen for disease.
Each captured deer is fitted with a satellite GPS collar designed to drop off automatically after four years. These collars do not interfere with natural behaviour.
Most captures occur from December to January, with some continuing into February through mid-April, depending on weather and research needs. The project aims to maintain at least 100 active collars per study area during years 3 to 5 of the study.
What happens after collaring?
The collars transmit location data via satellite, enabling researchers to track deer movements in near real-time. If a collar remains stationary for six hours, an automatic alert is sent to the field team, who then travel to the site to investigate the likely cause of death.
If you're interested in helping with mortality investigations or collar retrieval, please Contact Us.
Where is the data stored?
All data is securely stored in an online research database. You can view:
- Publicly available movement data (summary and select individual tracks)
- Completed mortality investigations
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