lush meadows formed by colony of sea birds

abundance guano fertilizer bird colony droppings dung landscape birdlime cereals chicken manure chinchas sea birds dense grass seabirds feces fertilized meadow field fish fortified fowl grassland herb herbage hill meadows lime lush manured ecosystem slope tundra natural fertilizers nitrogen nitrogenous north ornithogenic ornitogenic poultry excreta rookery thick tussock weed formed chinchas landscape