Songbirds set long-distance migration record
Researchers have studied flight routes to determine how far willow warblers migrate in the autumn. The results show that the willow warbler holds a long-distance migration record in the 10-gram weight category -- with the small birds flying around 13,000 kilometers or longer to reach their destination.
from Latest Science News -- ScienceDaily https://ift.tt/2z9bUA4
from Latest Science News -- ScienceDaily https://ift.tt/2z9bUA4
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