Repeat Breeding Bird Survey of the National Forest (English Midlands) in 2010 Marchant John H. Spiral / 2011 / Engelsk
Analysis of Population Trends for Waterways Birds A Comparison of Waterways Bird Survey Indices Newson Stuart Spiral / 2006 / Engelsk
Preliminary BBS-based Habitat-specific Indicators for Wild Bird Populations 1994-2002 Newson Stuart Spiral / 2006 / Engelsk
