Cargill Salt Pond Waterbird Surveys Report, October 2008 - September 2009
The San Francisco Bay Bird Observatory surveyed 22 salt evaporation ponds for waterbirds and sampled water quality from October 2008 through September 2009.
The San Francisco Bay Bird Observatory surveyed 22 salt evaporation ponds for waterbirds and sampled water quality from October 2008 through September 2009.
This report conveys the results of the 2008 nesting waterbird monitoring program, led by the San Francisco Bay Bird Observatory.
This report conveys the results of the 2009 nesting waterbird monitoring program, led by the San Francisco Bay Bird Observatory.
This report conveys the results of the 2010 nesting waterbird monitoring program, led by the San Francisco Bay Bird Observatory.
This report conveys the results of the 2011 nesting waterbird monitoring program, led by the San Francisco Bay Bird Observatory.
The California Gull (Larus californicus) population in the South San Francisco Bay has increased from fewer to 200 breeding Gulls in 1982, to a peak of 52,172 in 2012. Specific to this study there were 46,030 breeding Gulls in 2010 and 37,716 breeding Gulls in 2011.
In this report we document activities from March 31, 2012 to June 30, 2012, by task, and summarize the project’s current results. This is the sixth quarterly report and the first annual report for the project.
In 2011, we recorded Snowy Plover numbers, site use, nest success, fledging success, use of habitat enhancement project sites, species of nest predators and avian predator numbers throughout the Snowy Plover breeding season.
In 2010, we recorded Snowy Plover numbers, site use, nest success, fledging success, use of habitat enhancement project sites, species of nest predators and avian predator numbers throughout the Snowy Plover breeding season.
In San Francisco Bay, three former salt pond complexes (Alviso, Eden Landing, and Ravenswood) have been decommissioned, i.e., taken out of commission, and are planned for marsh restoration.
We have included a summary table of areas where gulls were re-sighted in 2011, the number seen in each area, if the gulls were adults or immature, and the months banded gulls were observed at that location.
Our objectives are to determine the impact of gulls on breeding snowy plovers and Forster’s terns.; Color-mark California gulls at A6 to determine potential nesting distributions after restoration of A6.; Continue our California gull colony surveys to document current population size.
We surveyed on 22 salt ponds in the Coyote Hills, Dumbarton, and Mowry salt pond complexes from October 2009 – November 2010. During the surveys, we recorded the number of birds, species and behaviors. We also recorded the birds’ locations within the ponds, using a 250m X 250m grid system.