“Habitat loss … habitat loss.” Hannah Maltry points to her paintings of birds displayed on her studio walls. She explains, one by one, why each species is today just holding onto existence. “With us chewing up the natural landscape, they’re all suffering,” she says. Maltry, a 34-year-old Columbus, Ohio, artist, is painting the portrait of every one of the 2,000-some bird species in North America. So far, she’s completed more than 200 for a project she estimates could take 10 yea...