Fugle
Planting trees as windbreaks on farmland can sharply cut populations of grassland and wetland birds, according to new research in central Japan.
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Researchers have tracked the eye movements of pigeons in flight for the first time. The birds fix their gaze after takeoff rather than scanning their surroundings.
A 60-year study of over 80,000 great tits in Oxford's Wytham Woods shows that cold snaps and heavy rain reduce nestling body mass and survival chances. Birds breeding earlier in the season appear better shielded from these effects. Moderate warm spells, however, can boost chick growth by enhancing food availability.
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I årets fugletælling nåede solsorten en rekordhøjde på 52 364 observerede individer, oplyser BirdLife Sverige. Talekisen topper listen som sædvanlig, mens antallet af deltagere steg til 19 000 på grund af vintervejet. Tællingen fandt sted i weekenden og fremhæver ændringer i fuglebestandene.