https://www.bto.org/our-work/science/publications/papers/comparison-two-survey-methods-assessing-bird-species
A comparison of two survey methods for assessing bird species richness and abundance in tropical farmlands
A comparison of two survey methods for assessing bird species richness and abundance in tropical farmlands
Citation
Nalwanga, D., Pomeroy, D., Vickery, J. & Atkinson, P.W. 2012. A comparison of two survey methods for assessing bird species richness and abundance in tropical farmlands. Bird Study 59: 95. doi:10.1080/00063657.2011.648164