Fighter-pilot dogfights no longer blaze across the night skies of Europe, but other fliers may still duel to the death up there. Researchers in Spain propose that bats hunt down migrating birds in midair.
The biggest bat in Europe, the greater noctule, or Nyctalus lasiopterus, eats many birds during the spring and fall migrations, says Javier Juste of Doana Biological Station in Seville.
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