Hombre Pájaro (Birdman) is an experimental project focused on the preservation of urban birds. A collection of sustainable nests and feeders made primarily with compressed mud, clays and plaster. These products can be placed on different surfaces thanks to the three types of wooden supports: wall, pole or hang support. Using ancient techniques of vernacular architecture, each nest and feeder is waterproofed with a mexican cactus slime, the nopal. And also, it is lined internally with a mixture of horse manure and dark soil, which is attractive for birds.