Visitor's center at Elkhorn Slough National Estuarine Research Reserve.
Picnic area near the visitor's center.
Elkhorn Slough National Estuarine Research Reserve viewing platform.
Elkhorn Slough National Estuarine Research Reserve viewing platform.
Picnic tables are interspersed throughout Elkhorn Slough National Estuarine Research Reserve.
Clearly marked trails in Elkhorn Slough National Estuarine Research Reserve.
Remnants of an old dairy farm.
Trail along the South Marsh Loop.
Boardwalk leading out into the slough.
Bridge crossing.
View near the North Marsh Loop Trailhead.
A pelican prepares for landing at Elkhorn Slough National Estuarine Research Reserve.
A mudflat in the slough.
The way to Hummingbird Island.
South end of the slough.
An otter passing by.
An egret flying overhead.
Railroad crossing to Hummingbird Island.
View from Hummingbird Island.
North Slough Overlook.
Viewpoint at North Slough Overlook.
Mudflats covered with birds.
A great egret looking for a meal.
An endangered brown pelican.
East side of the South Marsh Loop.
Elkhorn Slough National Estuarine Research Reserve.
Barn at the dairy farm.