Amateur bird enthusiasts (called birdwatchers, twitchers or, more commonly, birders) number in the millions. It is popular with campers, hikers, birdwatchers, canoeists, hunters and equestrians. The trail is used by birdwatchers, bikers and hikers. Each year the park is visited by birdwatchers and hikers. Another watershed, Kleinstuck Marsh, is popular with hikers and birdwatchers. The promenade on the River Shannon is popular among anglers, birdwatchers and swimmers. Fishers, hunters, birdwatchers and other recreational users flock to Los Banos year round. The dam is popular with birdwatchers, windsurfers, and anglers. Albatrosses are popular birds for birdwatchers, and their colonies are popular destinations for ecotourists. It is renowned for its birdlife, and is popular with birdwatchers. Even birdwatchers often hold it in little regard because of its molestation of other birds. The range of visitors varies from very serious birdwatchers to school children. Most years, birdwatchers recognize around 150 species. As such, the species draws in thousands of birdwatchers from all over the world. The best known trail in this national park is Pipeline Road, popular among birdwatchers.