Generally during low tide, on the North McCoy trail, you will usually see a good variety of shorebirds feeding on the tidal mudflats, especially during fall/winter migrations. High tides will often flush the Light-footed Clapper Rail into higher areas of the marsh. The brackish ponds reached from the 5th and Iris Street trail offer a good look at migratory waterfowl and many other bird species found at the Reserve. The rivermouth is an excellent place to see a variety of birds especially California Brown Pelicans. View Bird List.