Chamber-pop warbler Antony Hegarty has always thrived in stark black-and-white, from the monotone severity of his cover photos to the crashing finality of his lost-love elegies. But he follows 2005’s Mercury Prizewinning I Am a Bird Now with something decidedly more green: a five-song EP of environmental mourning. “Shake That Devil” purrs with a Ray Charlesworthy retro R&B beat and the furious nonvegan chorus of “Shake that pig!” The title track crashes back to earth; nearly a cappella, Hegarty runs down a dirgelike list of all the natural gifts we’re loudly neglecting to save.