A person who observes or identifies wild birds in their natural environment.(noun)
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Use "birdwatcher" in a sentence
"Amy Hooper of Wildbird on the Fly recently posted a couple of entries on the origin and relative use of the terms "birdwatcher" and "birder.""
"Yes I am a birdwatcher and keep my bird identification book handy."
"Seriously, I probably don't fit the definition of a birdwatcher, but I've been paying a lot more attention to our non-game feathered friends since I took up amature wildlife photography."