The Icelandic Whooper Swan Cygnus cygnus population: current status and long-term (1986–2020) trends in its numbers and distribution

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Spatial and temporal differences in migration strategies among endangered European Greater Spotted Eagles Clanga clanga

A new collaborative research study involving BTO has used GPS to track the movements of one of Europe’s rarest birds of prey, the Greater Spotted Eagle, shedding light on the pressures this species faces outside of the breeding season.

GPS tracking reveals landfill closures induce higher foraging effort and habitat switching in gulls

New research from a collaboration between BTO, Natural England and researchers at the University of Exeter has used GPS-tracking to investigate the movement behaviour of Lesser Black-backed Gulls in response to landfill closures. Gulls were found to increase their foraging effort and switch to alternative habitats following the loss of this important food resource.

Setting priorities for climate change adaptation of Critical Sites in the Africa-Eurasian waterbird flyways

Better utilisation and transparency of bird data collected by powerline companies

New BTO research has examined the extent to which data on avian electrocutions and collisions are collected by companies responsible for high-voltage powerlines across Europe, and made recommendations to develop best practice.