Duck hunt: Ellen (Katie Chang), Timmy (Alex Wolff), David (Kodi Smit-McPhee) and Peter (Michael Chen) search for an extinct bird. I’ve always thought ducks were pretty great. They’re beautiful birds big enough to see a good amount of detail. They tend to stay in one place long enough to offer a really satisfying look, sometimes with the naked eye. And often many species congregate together—on open water. So when I heard that Rob Meyer and Luke Matheny’s new film “A Birder’s Guide to Everything” was about four high schoolers chasing a long-forgotten duck, I was pretty stoked. After seeing the movie Monday, I can say wholeheartedly that it didn’t disappoint. When 15-year-old David Portney, an angst-filled bird lover played by Kodi Smit-McPhee, thinks he spots the extinct Labrador duck, he snaps a few blurry photos, then rounds up his Young Birders Society cohorts—Timmy (Alex Wolff) and Peter (Michael Chen)—to vote on whether to chase the animal. Two yays...