Endangered species Birds Rare birds Biological diversity conservation Birds, Protection of Birds, Protector of National parks and reserves Protected areas Bird conservation Birds - - Specification Crosby, Michael J. Forest conservation Forest protection Lake Lanao Mallari, Neil Aldrin D. Mount Kitanglad (Bukidnon) Mount Piagayungan (Lanao del Sur) Natural resources conservation areas Northern Sierra Madre National Park Rarebirds Specification Statterfield, Alison J.