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Suggested general bird survey methodology. These suggested guidelines were adapted from a series of common methodologies used for various bird surveys and WeBS Methods. 3. The Wetland Bird Survey (WeBS) is the UK national non-breeding waterbird monitoring scheme. WeBS Core Counts are carried out at a wideBird survey methods. Baseline survey. Animal welfare. · Avoid close-range observation wherever possible during breeding and feeding. Bird census and survey techniques. 17. Richard D. Gregory, David W. Gibbons, and Paul F. Donald. 2.1 Introduction. 17. 2.1.1 What are bird surveys and why Field, R.H. & Gregory, R.D. (1999) Measuring population changes from the Breeding Bird Survey. Research Report No. 217, British Trust for Ornithology, Thetford. A variety of survey methods exist for the study of bird populations and movements. Almost every situation requires that a method is slightly modified in