Last Friday at a rally in Portland, Oregon, presidential candidate Bernie Sanders received an unexpected visitor while addressing the crowd: A small bird landed on his podium and lingered for nearly half a minute, sparking wild applause and a new campaign meme. “Birdie Sanders” has since gone viral. Sanders was quick to take advantage of the serendipitous situation by characterizing the bird as a dove asking for world peace. However enticing that symbolism, the bird clearly wasn’t a dove—nor was it a female goldfinch, as indicated in a retweet by Rachel Maddow. 吃瓜黑料 staff quickly sized it up and made the correct ID: Birdie Sanders is a female House Finch. “Female House Finches are evenly grayish-brown on the face and back and have gray-brown streaks on their belly and sides,” says David Ringer, Chief Network Officer for 吃瓜黑料 and expert birder of the hour. “No other bird in the Portland area really matches that description.” Though the female House...