Noun bird watcher has 2 senses
  1. ornithologist, bird watcher - a zoologist who studies birds
    --1 is a kind of zoologist, animal scientist
    --1 has particulars: Audubon, John James Audubon; Wilson, Alexander Wilson
    Derived form: verb birdwatch1
  2. bird watcher, birder - a person who identifies and studies birds in their natural habitats
    --2 is a kind of amateur
    Derived form: verb birdwatch1
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