Algae, at the bottom of the food web, support trillions of tiny brine shrimp plus the aquatic larvae and pupae of vast numbers of alkali flies, whose swarms blanket the shore in summer.

Each year, about 50,000 California Gulls nest here. Mono Lake is an alkaline lake east of Yosemite National Park, largely fed by streams from the Sierra Nevada; it has no natural outlet.In 1919 the level of the lake peaked at 6427' above sea level. Because large numbers of phalaropes, gulls, and grebes depend on the lake, along with approximately 100 species of other birds, Mono Lake was designated as a part of the Western Hemisphere Shorebird Reserve Network (WHSRN).

Mono Lake has alkaline, highly saline water that supports no fish, yet it teems with other aquatic life. Mono Lake: In the June 25 Section A, a graphic with an article on the effects of the drought on Mono Lake showed the scale as water level in feet.

The lake is an important nesting ground for gulls but the recent arrival of a Eurasian bush known as five-horn smotherweed has left little room for nesting. Same date Fri Jul 03, 2020.
Birds bred and nested on a few volcanic islands in the lake, sustained by the extensive brine shrimp and alkali flies, which also attracted large numbers of migratory birds. Located in California's spectacular Eastern Sierra, Mono Lake is an oasis in the dry Great Basin and a vital habitat for millions of migratory and nesting birds. The islets of Mono Lake are crucial nesting habitat for one of the worlds’ three largest colonies of California Gulls (Larus californicus).Annually, an average of over 46,000 California Gulls nest at Mono Lake, with the population fluctuating as high as nearly 65,000 breeding individuals. This desert lake has an unusually productive ecosystem based on brine shrimp that thrive in its waters, and provides critical nesting habitat for two million annual migratory birds that feed on the shrimp. A massive weed infestation on a tiny island at Mono Lake has choked out the nesting grounds that California gulls need to complete a life cycle … ADVERTISEMENT About 32,000 gull nests were counted at Mono Lake in the early 1990s. Mono Lake is a small, vital part of the big migration picture. A controlled burn on Twain Island at Mono Lake targets invasive weeds that have deprived California gulls of prime nesting ground. Visitor Center The Mono Basin Scenic Area Visitor Center is a great place to start your visit to this area. The lake is famous for the Mono Lake brine shrimp, a tiny species of brine shrimp, no bigger than a thumbnail, that are endemic. Because the water is salty, there is no riparian fringe on the lake except where streams flow in.

There is also a large island in the lake that ground-nesting birds (especially the California Gull) use for nesting. Last year, I saw 76 species in my 5MR and my goal was to break 80 this year. Birding the tufa towers (view northeast). On May 9, to celebrate World Migratory Bird Day and eBird’s Global Big Day, my partner Kevin and I set out to see as many bird species as possible within a 5 miles radius (5MR) of the Mono Lake Committee office while contributing to the eBird Global Big Day citizen science project.

Same area and date Another location near Mono Lake--South Tufa area , Mono County, California, US on Fri Jul 03, 2020. California Gull: This bird is an icon of Mono Lake. Different location and date

Mono Lake--South Tufa area , Mono County, California, US. Bird rest and nest on the tufa towers. The scale should be water level in feet of elevation.

Bird walks are offered at the Mono Lake County Park/State Natural Reserve boardwalk at 8:00 a.m. Fridays and Sundays mid-May through Labor Day. Same area Another location near Mono Lake--South Tufa area , Mono County, California, US.
In the late 1970s, however, the declining lake level exposed a landbridge between the mainland and Negit Island (the small black island on the lake that was once the gull’s primary nesting ground), allowing coyotes to prey on eggs and chicks.
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