Publications

Publications

BTO create and publish a variety of important articles, papers, journals and other publications, independently and with our partners, for organisations, government and the private sector. Some of our publications (books, guides and atlases) are also available to buy in our online shop.

Annual report of the Seabird Monitoring Programme

Seabird Population Trends and Causes of Change: 1986–2023

This report presents the latest seabird population trends in breeding abundance and productivity using data from the Seabird Monitoring Programme (SMP). 

The report documents changes in the abundance and productivity of breeding seabird species in Britain and Ireland from 1986 to 2023, and provides a detailed account of the 2021, 2022 and 2023 breeding seasons.

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Annual report of the Seabird Monitoring Programme

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Power source, data retrieval method, and attachment type affect success of dorsally mounted tracking tag deployments in 37 species of shorebirds

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Published: 2025

Tracking studies, where individual devices are fitted to birds to follow their movements, are becoming increasingly common in ornithology. This paper uses previous research tracking waders to evalutate how various factors, including tag attachment type and power source, affect the likelihood that a study will meet its goals, and provides guidelines for selecting a tracking technique to optimise the chances of success.

04.12.25

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Overwinter population estimates of waterbirds in Great Britain

Author:

Published: 2025

Analysis of data from long-term monitoring schemes gives a total wintering waterbird population estimate in Great Britain of 12.8 million individuals for 2017/2018 to 2022/2023. While this total is unchanged from the previous estimate, there have been notable shifts, with numbers of estuarine waders, Whooper Swans, Little Egrets and non-migratory geese increasing, and declines in several duck and goose populations, including Bewick’s Swan, Pink-footed Goose and Teal.

01.12.25

Papers

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