california gull: challenges and opportunities for restoration
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California Gull: Challenges and Opportunities for Restoration
Cheryl M. Strong, USFWS
California Gulls
All data from:
in San Francisco Bay and beyond
effects on other species
cumulative effects: gulls + restoration
improving nesting success of other nesting waterbirds
Not all gulls are created equal
R. Golden
San Francisco Bay gull
numbers
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
0
10000
20000
30000
40000
50000SFBay
Year
SF Bay and Mono Lake gull
numbers
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 20100
10000
20000
30000
40000
50000
60000
Mono LakeSFBay
Year
R. Wilming
K. Larson
M. Kern
S. Norton
AvocetStilt
Forster’s tern
Nest Distribution 2005-2008
American avocetBlack-necked stiltForster’s tern
tidal marsh restoration at A6
J. Irving
breach of pond A6
Improving the nesting success of (non-gull) waterbirds
IslandsShells
“No gull” zones
S. Norton
C. BentonK. Larson
G. Ellis
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