GGBA birds the Bay with Dolphin Charters
By David Assmann
At 8:45 a.m. on Saturday November 21st, 29 enthusiastic birders boarded the double-decker River Dolphin at the Berkeley Marina for a full day of birding on San Francisco Bay with Golden Gate Bird Alliance and Dolphin Charters. It was sunny, and the Bay was flat without any whitecaps.
Heading out of the dock, we got good looks at a number of Black Oystercatchers and a Black Turnstone. Shortly after leaving the dock, a Black Scoter flew in front of the boat, a harbinger of the day’s potential. While we saw hundreds of Surf Scoters on the trip, seeing a Black Scoter in the Bay is always special, since this winter resident sea duck is normally found in the Pacific Ocean.
Much more amazing than the Black Scoter was our second notable sighting of the day – not a bird, but a Northern Fur Seal, floating a little more than a mile from shore. It was in a classic fur seal jug handle pose – the hindflippers resting on top of a foreflipper out of the water. This apparently healthy young seal was miles away from its usual habitat. Northern Fur Seals are normally strictly pelagic, and only use a few offshore islands, like the Farallon Islands, for breeding and pupping.
Northern Fur Seal – a Bay rarity, by David Assmann
Northern Fur Seals were common before the arrival of Europeans on the West Coast. In the middens at the Emeryville Shell Mounds, small numbers of fur seal bones have been found dating to between 700 BC and 1300 AD. However, fur seals were coveted by Europeans for their fur, and they were almost totally wiped out by hunters in the late 1800s off the coast of California.
A small population was discovered in 1968 on San Miguel Island (the westernmost of the Channel Islands). A few of those seals made their way to the Farallones and in 1996, for the first time in more than a century, a fur seal was born on the Farallones. Since then, this population has increased to more than 1,000 seals. However, despite being protected, fur seal populations are still declining worldwide, and the species is listed as vulnerable under the Endangered Species Act.
After taking long looks at the Northern Fur Seal (allowing photographers to take multiple pictures), the River Dolphin slowly made its way north along the east side of the San Francisco Bay.…