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  1. 19635

    I was surprised to read nothing about the timing of the songs when the birds are separated by distance. The ABCD duet would become A—BC—D (where the dashes represent the time delay due to distance) to the male and AB—CD to the female. The duet could be a distance-measurement tool for pairs wanting to keep […]

    By Science News
  2. Animals

    Just Duet

    Two or more birds in some species can sing with such coordination that a human listener would swear that it's just one singer. With audio files.

    By Susan Milius

  3. 19634

    This article made no mention of the Clarno fossil beds and others nearby in north-central Oregon. Everything from pollen to midsize extinct mammals has been perfectly preserved and looks exactly like freshly exposed matter, not fossil rock.