Latest Research

Wren by John Harding

Northern Wrens weather the winter better than southerners

New BTO research reveals that one of our most widespread songbirds – the Wren – varies in its resilience to winter weather, depending on where in Britain it lives. Scottish Wrens are larger than those living in southern Britain, and are more resilient to hard winter frosts.

Little Owl, photograph by John Harding

Monitoring Little Owls with playback

Little Owls are in decline in the UK, but are hard to monitor, making it difficult to establish this species' conservation and management needs. Newly-published research by the BTO demonstrates how playback could be an effective tool for helping to detect and monitor this species.

Brambling, photograph by Jill Pakenham

Climate change drives bird populations on both sides of the Atlantic

New research involving the BTO shows how the populations of hundreds of species of common birds are consistently responding to the effects of climate change on two continents - Europe and North America.

Swallow by Amy Lewis

Summer migrants stay for longer as the UK climate warms

New BTO research has used volunteer data from long-running citizen science schemes to show how the timing of bird migration to and from the UK has changed since the 1960s.

Willow Warbler, photograph by Jill Pakenham

What drives biodiversity change in the UK?

A new collaborative study involving BTO shows how climate change and agricultural intensification have driven changes in biodiversity for more than 400 UK species since 1970.

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