AJ Taylor4 hours agoLast Updated: April 23, 2021 Union Slough National Wildlife Refuge is pleased to announce the auto tour route will be open from Saturday, May 1st through Mother’s Day, May 9th, 2021 in celebration of World Migratory Bird Day. Visitors are welcome to drive the tour route from sunrise to sunset during those dates. The auto tour route begins at the refuge headquarters and takes visitors along a four and one-half mile drive of wetland, open water, and prairie habitat. Along the tour route, a variety of birds and other wildlife can be seen including trumpeter swans, bald eagles, great blue herons, ducks,