Table 2. Expert elicitation.

Stage	Procedure
1. Pre-elicitation	Experts briefed on the study and elicitation process, and practice wearing VR-headsets and answering questions
2. Elicitation	Experts answer questions individually: Koala presence Q1. What is the smallest probability of a koala being present in this location? Q2. What is the largest probability of a koala being present in this location? Q3. What is the expected probability of a koala being present in this location? Q4. How certain are you about your answers? (1 = not very sure, 2 = quite sure, 3 = very sure) Overall Suitability Q5. What is the probability that this is a suitable koala habitat? Q6. How certain are you about your answer? (1 = not very sure, 2 = quite sure, 3 = very sure)

Information elicited from koala experts using a two-part structured elicitation procedure (see S1 File for the full protocol).