https://www.bto.org/our-work/science/publications/reports/research-reports/00337-population-trends-waterways-birds
Analysis of population trends for waterways birds: a comparison of Waterways Bird Survey indices
Analysis of population trends for waterways birds: a comparison of Waterways Bird Survey indices
Citation
Newson, S.E., Noble, D.G. & Marchant, J.H. 2003. Analysis of population trends for waterways birds: a comparison of Waterways Bird Survey indices.
