 Part of the network of National Wildlife Refuges ( NWR ) , the Tualatin River refuge is one of only ten urban refuges in the United States . Habitats in the refuge include forested areas , wetlands , oak and pine grassland , and meadows , with mixed deciduous and coniferous forests common to Western Oregon . The refuge was established as an urban refuge to provide wetland , riparian , and upland habitats for a variety of migratory birds , threatened and endangered species , fish and other resident wildlife . The refuge is home to nearly 200 bird species and more than 70 other animal species . 
