Avery Orenthal is a bird-watcher.
He is a Caucasian male with light brown hair.
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What's New, Scooby-Doo?
He was trying to catch sight of the giant Wakumi bird. Because he always seemed to show up just after it left he was suspected of operating the bird himself. In the end, he was happy to get the head of the broken Wakumi glider as a souvenir. (New Mexico, Old Monster)