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Female gannets travel further than male gannets to find fish for their chicks in some years but not others, new research shows.
Scientists tracked breeding gannets from Grassholm Island in Wales over 11 years with tiny GPS devices and by measuring isotopic signatures in their blood.
Male gannets flew an average of 220km to forage for their chicks, while females averaged 260km. Some birds travelled 1,000km on a single trip.
The scientists also found that the two sexes selected different habitats and foraged at different times of day, but some years they were more in sync.
Dr Bethany Clark worked on the research during her PhD at the University of Exeter’s Environmental and Sustainability Institute, and now works at BirdLife International.
FROSTY S RAMBLINGS The bird that hatched environmentalism morningstaronline.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from morningstaronline.co.uk Daily Mail and Mail on Sunday newspapers.
Female gannets go the extra mile to feed chicks eurekalert.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from eurekalert.org Daily Mail and Mail on Sunday newspapers.