Study finds species stay longer in European breeding grounds and spend less time in Africa
Migratory birds including the willow warbler, the garden warbler and the nightingale may eventually stop flying south for the winter as they spend longer in their European breeding grounds.
Analysis of more than 50 years of bird records from the Gambia and Gibraltar has found that some migratory species that cross the Sahara are spending between 50 and 60 fewer days on average in Africa each winter.
