The flight speed of birds is more complex than previously thought
(WorldNews Sweden)

Last year, biologists Anders Hedenström and Susanne Åkesson showed that the flight speed of terns is affected by their morphology, weight and the size of their flock. The larger the flock, the faster the speed. Now the researchers have expanded the study and included other birds and more factors that affect speed. In their new study, the researchers focused on three types of waders - oystercatcher, red knot and dunlin - and monitored bird flocks on southern Öland...