https://www.bto.org/our-work/science/publications/papers/estimating-numbers-birds-point-counts-how-long-should
Estimating numbers of birds by point counts: how long should counts last?
Estimating numbers of birds by point counts: how long should counts last?
Citation
Fuller, R.J. & Langslow, D.R. 1984. Estimating numbers of birds by point counts: how long should counts last?. Bird Study 31: 202. doi:10.1080/00063658409476841
