The BTO’s BirdTrends report is a one-stop shop for information about the population status of the common breeding birds of the wider UK countryside. The report is based on data gathered by the many thousands of volunteers who contribute to BTO-led surveys.
For each of 121 species, users can quickly access the latest information on trends in population size, breeding performance and survival rates, as measured by our long-term monitoring schemes.
Click here for more information.: BirdTrends 2019: trends in numbers, breeding success and survival for UK breeding birds | BTO – British Trust for Ornithology