https://www.bto.org/our-work/science/publications/papers/monitoring-terrestrial-bird-populations-uk-new
Monitoring terrestrial bird populations in the UK: the new Breeding Bird Survey
Monitoring terrestrial bird populations in the UK: the new Breeding Bird Survey
Citation
Gregory, R.D., Carter, S.P. & Baillie, S.R. 1995. Monitoring terrestrial bird populations in the UK: the new Breeding Bird Survey. BTO/JNCC
