anchor: Lying to the north of Huntington Beach is the Bolsa Chica Ecological Reserve, a salt marsh that harbors more than 300 types of birds, which you can see along a 11.2-mile (21.2-km) loop trail.
positive: There are more than 300 types of birds at the salt marsh.
negative: Bolsa Chica Ecological Reserve offers a harbor to less than 50 types of birds.