• Arctic Refuge: Summer home for our birds

    Editor’s Note: Autumn brings the return of many beloved Bay Area birds like White-crowned Sparrows. Where have they been all summer? This article by an Audubon Alaska staffer provides a vivid glimpse not just of where they go, but of the native people who welcome them there… and why we need to protect their summer home.
    By Susan Culliney 
    As the Policy Associate for Audubon Alaska, I recently spent five days in remote Arctic Village at the biannual Gwich’in Gathering. The Gwich’in are a First Nation of aboriginal people from the Yukon River flats of northwestern Alaska and Canada’s Yukon and Northwest territories. They gather every other year to maintain ties with family and friends, to keep their traditional food, dance, and language alive and thriving, and to tend to the governance and resolutions of their Native nation.
    In 1988, the Gwich’in Nation resolved to stand strong against drilling in the coastal plain of the Arctic National Wildlife Refuge. The coastal plain is the calving grounds for the Porcupine Caribou herd, which the Gwich’in rely on for their food security and cultural identity. Drilling activities in the coastal plain would interrupt caribou migration patterns, as well as impact denning polar bears and thousands of migratory birds. I attended this year’s gathering initially to represent Audubon’s support in this important campaign, but I also came away with an enriched understanding of the ties that bind these people so intimately to their birds, wildlife, and landscape.
    2016 Gwich’in Gathering in Arctic Village, Alaska / Photo by Susan Culliney2016 Gwich’in Gathering in Arctic Village, Alaska / Photo by Susan Culliney
    Boats docked at Arctic Village, on the edge of the Arctic National Wildlife Refuge / Photo by Susan CullingBoats docked at Arctic Village, on the edge of the Arctic National Wildlife Refuge / Photo by Susan Culliney
    Arctic Village, called Vashraii Koo by the people who live there, is nestled in the embrace of the foothills of the Brooks Range. The village is hugged on three sides by the Arctic National Wildlife Refuge, which spreads to the north, west, and east in huge swaths of wilderness, dramatic terrain, and lakes and streams dotted with waterbirds. A few houses and buildings congregate here on high ground, surrounded by the tundra and the East Fork of the Chandalar River. Is the land empty or is it full? It depends on how you value the resounding silence, the unapologetic open space, and the timeless wildlife dramas that play out against a backdrop of unrestrained freedom.
    Though the land appears motionless, caribou move in giant patterns across the tundra.…

  • Osprey nesting success at Alameda Point

    By Richard Bangert
    Location, location, location! But for a fenced-off dilapidated navigation light stand on a jetty at the Seaplane Lagoon, Ospreys would not have had a successful nesting season at Alameda Point in 2016.
    In late August, two adult Ospreys took flight from their Seaplane Lagoon perch for parts unknown with two healthy offspring. It was a welcome sight because for the past three years a series of frustrating avian soap operas featuring other Ospreys and unwanted nesting attempts aboard the maritime ship Admiral Callaghan were marked with failure. Previously in 2012 they had raised one chick, the only other recorded case of Osprey reproduction at Alameda Point.
    Osprey pair with two chicks on June 8, 2016 by Richard BangertOsprey pair with two chicks on June 8, 2016 by Richard Bangert
    The Ospreys briefly attempted to nest this year on a parking lot light pole on the wharf near the USS Hornet. But a pair of ravens repeatedly harassed the Ospreys, even stealing nesting material and tossing some of it on the ground. The Ospreys finally found peace back on their original nest from years ago that still straddles the top of the light stand at the entrance to the Seaplane Lagoon. The navigation light stand, erected in 1940, is at the tip of the rock wall jetty on the west side of the lagoon.
    This year’s nesting effort was aided by the installation of a fence across the foot of the jetty where the nest sits to keep curious individuals from wandering out near the nest and causing the birds to leave the nest. The fence was erected by the city at the urging of local osprey watchers.
    Two-month-old osprey lands on fence that keeps people from approaching the nest site.Two-month-old Osprey lands on fence that keeps people from approaching the nest site.
    “Frequent disturbances can cause anxiety in wildlife that interrupts normal behavior,” said Leora Feeney, a longtime advocate for Alameda wildlife with Golden Gate Bird Alliance. “Having birds leave the nest, even for a few moments, provides an opportunity for gulls, ravens, herons, or others to prey on eggs or chicks.”
    More help is needed in order to maintain this unusual raptor nest site. Three of the iron legs on the light stand are rusted through and won’t hold up the bulky Osprey nest much longer. Years ago its mate on the other side of the lagoon entrance toppled over and is hanging by a chain at water’s edge.

    Legs of the navigation light stand are rusted through. Light was erected in 1940.Legs of the navigation light stand are rusted through. Light was erected in 1940.
  • The boldness of the Bewick’s Wren

    By Eric Schroeder
    “Adorable” is how my wife Susan once described the Bewick’s Wren, and even non-birders would agree with the aptness of the description. These wrens are brown on their backs, wings, tails, and heads, and grey on their bellies. The bill is curved, the tail is long, and the outer tail feathers show white.
    Most distinctive is the long, pronounced white eyebrow that helps to distinguish the Bewick’s from the House Wren that it most resembles in the west and southwest. This eyebrow gives it a cocky appearance—contributing to the “adorable” effect. Bewick’s are small, slender birds, averaging a bit over five inches in length and weighing only about a third of an ounce. But their size is belied by their bold character.
    Their boldness is perhaps most evident in their song. For such a small bird, the Bewick’s Wren has tremendous vocal range and power. A male bird can have up to sixteen different songs. They can be tireless, too: In early spring, singing can take up to half of the male’s time. It’s no wonder that one of the names for a group of wrens is a “chime”—the others being a flock, a flight, and a herd! On a recent bird walk in the Oakland Hills, Golden Gate Bird Alliance birding instructor Bob Lewis said that when you hear a bird you can’t immediately identify by song, Bewick’s Wren is often the right guess. I’m becoming more familiar with my resident male’s repertoire, but he is still capable of fooling me on occasion.
    Bewick's Wren in the backyard by Eric SchroederBewick’s Wren in the backyard by Eric Schroeder
    Primarily a New World species (the only exception being the Eurasian Wren), the Bewick’s Wren, Thryomanes bewickii, was first collected by John James Audubon in Louisiana in the winter of 1821. Audubon named it after the English naturalist Thomas Bewick, whom Audubon met during a visit to England in 1827. Bewick was by then 74 years old and famous for his book A History of British Birds, recognized as a forerunner of modern field guides.
    Bewick's Wren by John James Audubon, Plate 18 in his Birds of AmericaBewick’s Wren by John James Audubon, Plate 18 in his Birds of America
    The Bewick’s was formerly beloved as the “house wren” of the Appalachians and the Midwest, but the species today has almost disappeared east of the Mississippi. Ironically, competition from the actual, later-arriving House Wren has been partly responsible for its steep decline in the east and parts of its traditional range in the west.…

  • Wood Duck nest boxes at Stow Lake

    By Dan Richman
    This July, Golden Gate Bird Alliance Volunteer Coordinator Noreen Weeden asked me to build a pair of Wood Duck nest boxes for duck-happy Stow Lake in Golden Gate Park. She offered me precise plans from a gentleman with the intriguing name of “Don the Wood Duck Man” from the State of Minnesota. I was happy to do it.
    As you probably know, Wood Ducks nest off the ground in hollow trees. A day after the ducklings hatch, mama flies down and calls to them. The tiny ducklings climb to the entry hole and leap out. Their undeveloped wings beat away but manage little more than to stabilize the fall so that the babies land on their bellies rather than on their heads – if they’re lucky. (There are lots of videos of this dramatic skydive on the web, such as this one taken from outside the box or this one taken from inside.)
    Female Wood Duck and ducklings at Niles Staging Area in Fremont / Photo by Roseanne SmithFemale Wood Duck and ducklings at Niles Staging Area in Fremont / Photo by Roseanne Smith
    Mama swims around below the nest until all the babies — as many as sixteen or more — have taken the plunge, then leads them to as safe a place as possible where they can learn to forage for food in the big world.
    Since urban park maintenance crews – not to mention lumber companies and the U.S. Forest Service in wild lands — habitually cut down dead or rotting trees that provide nesting hollows, duck enthusiasts have developed nest boxes to take their place. Now it was our turn.
    I bought twelve-inch redwood planks at Sierra Point Lumber in Colma and ripped them and cut them so that the boxes would end up two-and-half feet high, eight inches deep, and eight inches wide. The plans called for a sloped roof with an overhang front and rear, a mouth-shaped entry hole, and half-inch wire mesh attached inside the box to provide a ladder to the hole for the newly-hatched ducklings, which have unusually long claws on their webbed feet for climbing purposes.
    Male Wood Duck at Stow Lake / Photo by Alan HopkinsMale Wood Duck at Stow Lake / Photo by Alan Hopkins
    Following the advice of Don the Wood Duck Man and the Cornell Lab of Ornithology, I had predator shields made up of galvanized tin by a metal fabricating shop. These shields are about three feet wide and are cone-shaped and mounted umbrella-like on posts just below the nesting boxes.…

  • Peninsula Watershed – protect it!

    By Noreen Weeden
    On September 12, the San Francisco Board of Supervisors’ Land Use Committee will hear a proposed resolution seeking expanded public access to the Peninsula Watershed Lands. It urges the San Francisco Public Utilities Commission (SFPUC) to provide enhanced public access to existing roads and trails in the Watershed Lands, consistent with the goals of protecting the water supply and the environmental quality of the area.
    Sounds like a wonderful idea … except when you look into what this means for our drinking water supply, native plants, and wildlife.
    Golden Gate Bird Alliance opposes this resolution or, at a minimum, calls for postponing any decision until the SFPUC has completed its study on the impacts, costs, and funding for opening the watershed. We believe the wording of the resolution itself is contradictory. How exactly does opening up the watershed lands protect the water supply and the environmental quality? It will not. Opening public access to our watershed will have environmental impacts – especially impacts on our drinking water, native plants, birds, and other wildlife – that must be considered.
    Pilarcitos Reservoir in the Peninsula Watershed / Photo by Emma Leonard, Bay NaturePilarcitos Reservoir in the Peninsula Watershed / Photo by Emma Leonard, Bay Nature

    Protected since the 1860s

    The Peninsula Watershed is a 23,000-acre area surrounding Crystal Springs Reservoir, bordered by Pacifica and San Bruno in the north and Woodside and Redwood City in the south. (See map at bottom of this article.) As a source of drinking water for the city of San Francisco, it is owned by the PUC and has been closed to the public since it was originally set aside in the latter half of the 1800s. The watershed is part of a regional water system serving 2.6 million people in four San Francisco Bay Area counties. About five percent of San Francisco’s drinking water comes directly from rainfall and run-off into the Peninsula Watershed reservoirs. In addition, some Hetch Hetchy water (which makes up 85 percent of the city’s water supply) is stored in the Peninsula Watershed reservoirs on its way to the city.
    The watershed is critical, intact habitat for 800 plants and trees, 165 bird species, 50 mammal species, and other wildlife – many of which have been extirpated from other parts of the Bay Area. This watershed has the highest concentration of special status (rare, threatened and endangered) species in the entire nine-county Bay Area.
    The Peninsula Watershed is a California-designated Fish and Game Refuge and protected under the UNESCO Golden Gate Biosphere.…