https://www.bto.org/our-work/science/publications/papers/volunteer-surveys-means-inferring-trends-garden-mammal
Volunteer surveys as a means of inferring trends in garden mammal populations
Volunteer surveys as a means of inferring trends in garden mammal populations
Citation
Toms, M.P. & Newson, S.E. 2006. Volunteer surveys as a means of inferring trends in garden mammal populations. Mammal Review 26: 317. doi:10.1111/j.1365-2907.2006.00094.x