Phenological mismatch between breeding birds and their surveyors and implications for estimating population trends

Several studies in recent decades, including those led by BTO, have demonstrated that many birds are migrating or breeding earlier as the climate changes. These so-called phenological shifts could ...

86th Annual Report & Accounts 2019/20

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Evolution of chain migration in an aerial insectivorous bird, the Common Swift Apus apus

The highly aerial Common Swift Apus apus, which spends the non‐breeding period on the wing, has been found to exhibit a rarely‐found chain migration pattern.

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Behavioural responses of non-breeding waterbirds to drone approach are associated with flock size and habitat

Newly published research, carried out by staff at BTO Scotland, has investigated the response to wintering waterbirds to drones, and shown that they can be easily scared into flight by drone use.

Investigating the implications of shifting baseline syndrome on conservation

Do surveys of adult dragonflies and damselflies yield repeatable data? Variation in monthly counts of abundance and species ...