https://www.bto.org/our-work/science/publications/reports/research-reports/pilot-work-assess-bird-occurrence-and-abundance-bbs
Pilot work to assess bird occurrence and abundance on BBS squares within ESAs
Pilot work to assess bird occurrence and abundance on BBS squares within ESAs
Citation
Noble, D. & Newson, S. 2002. Pilot work to assess bird occurrence and abundance on BBS squares within ESAs.
