Fernbirds can be difficult to spot with their excellent camouflage and shy behavior. These long-tailed songbirds prefer dense, low wetland vegetation where they can seek shelter, roost and find snacks like insects, spiders and small invertebrates. They are poor fliers and make their nests close to the ground, lining them with grass, leaves and feathers. Fernbird populations have declined in New Zealand over the past century due to wetland drainage and predation. Their Conservation Status is At Risk-Declining.