At Las Gallinas, hundreds of acres of grasslands, ponds and marshes extend from a small water treatment facility. The marshes recede in all directions for hundreds of yards, and are surrounded by the beautiful hills of Marin. Acre for acre, it has some of the greatest diversity of birdlife I’ve ever seen, a favorite winter and spring resort for ducks, herons, egrets, shorebirds, raptors and songbirds. Harriers, Red-tails, White-tail kites, almost 10 species of ducks, pelicans, grebes, rails — all are found here, and numbers are frequently impressive. Leisurely walking tour around the ponds is about one-two miles. Total species observed usually range from 40 to 50. Great photographic opportunities for shorebirds of all kinds.