Production of smoothed population trends when a key year of data is missing.
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Author(s): Noble, D.G. & Gillings, S.
Published: April 2023 Issue No.: 748
Publisher: British Trust for Ornithology Pages: 12pp
ISBN: 9781912642434
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Prompted by the impact of Covid lockdown on fieldwork activity in 2020, this report assesses the impact on the direction and statistical confidence in the trends when a key year of Breeding Bird Survey data is missing.
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