*PhD Opportunity: Bighorn Sheep Disease Ecology* The Boyce lab is looking for a PhD Student to work on the bighorn sheep disease ecology project starting ASAP/Winter 2025. *Project Description:* Transmission of disease and pathogens from domesticated animals presents a substantial risk to wild species. Populations of Alberta's provincial mammal, the Rocky Mountain bighorn sheep (*Ovis canadensis canadensis*), are at high risk from the novel bacterium *Mycoplasma ovipneumoniae* ( *M.ovi*) which commonly occurs in domestic sheep and goat herds. In fact, a recent outbreak of *M.ovi* occurred near Sheep River Provincial Park in early 2023. The ultimate goal of this research is to understand and mitigate respiratory disease transfer from domestic sheep and goats to bighorns. Since March 2022 important data have been collected on the movement, demographics and behaviour of bighorn rams in SW Alberta. An important element of understanding risk is parameterization of a risk-of-contact model that requires population specific habitat selection and movement models. Summer forays (rapid, seemingly random, return movements beyond an individual's regularly used home range) are thought to be the most important movements that increase risk of contact with domestic sheep and goats. The objectives of this research include - Documenting patterns of movement of bighorn sheep - Documenting summer foray behaviour in males - Optimize Habitat Selection Models (HSM) for use in Risk-of-Contact (RoC) models - Complete RoC assessments for each study population - Document demographics for each study herd, and evaluate the influence of herd composition (ram:ewe ratios, age structure of ram groups) on foray behaviour. *Additional project information:* The project is well-funded and is composed of a multi-year data set from over a 100 GPS-collared sheep. Most fieldwork has been completed although the successful applicant will have opportunity to conduct additional fieldwork if needed. *Applicant requirements* Interested candidates should have completed an MSc in ecology/biology and should ensure that they meet the entrance requirements for the University of Alberta department of biology's PhD program. https://calendar.ualberta.ca/preview_program.php?catoid=44&poid=54706#:~:text=Entrance%20Requirements,standing%20from%20a%20recognized%20institution . Preference will be given to domestic (Canadian) applicants but international students with strong qualifications will be considered. Interested applicants should contact Dr. Mark Boyce at boyce@ualberta.ca with your CV and an expression of interest in the project. Please view https://grad.biology.ualberta.ca/boyce/ to find out more about the Boyce lab. Sheeraja Sridharan (to subscribe/unsubscribe the EvolDir send mail to golding@mcmaster.ca)