Overview

This report investigates the efficacy of methods for producing population trends from BTO/JNCC/RSPB Breeding Bird Survey data for six breeding wader species in the UK. It examines the effects of increasing the count threshold on the population trends for these six species, and also explores the effects of different geographic exclusion rules on the population trend of Golden Plover. Overall, it aims to test for any potential biases in the current trends, and in doing so, determines whether we can create a better approach which provides the most robust data for wader conservation moving forwards.