Ring-billed gull Larus delawarensis

                                   
                                                                                
                                                                                
Area|--------1966-1994 trends--------| |--1966-1979---||--1980-1994---|         
     Trend  P    N  (  95% CI  )  R.A.  Trend   P    N  Trend   P    N          
ALB    7.3 ***   37   1.9  12.7  16.06    5.7        18   2.6        34         
CAL    3.2       24  -0.7   7.1   4.81   16.3        19   5.0   **   18         
IDA    2.8       15  -1.4   7.0   5.07    0.5         5   4.1        13         
MAN    8.4  **   17   0.9  15.9  11.62  -19.7         5   7.8        17         
MIC    6.4 ***   25   2.6  10.2   9.91   41.8   **    9 -00.0        25         
MIN   21.2 ***   18   8.8  33.7   0.63  878.7         4  12.9    *   17         
MON   36.1       22 -16.1  88.4   2.14    7.2         5  27.3    *   20         
NY    14.5 ***   37   6.1  23.0   7.95   59.2  ***   12   1.5        35         
ND     5.6       27  -6.1  17.3   6.87   -5.0        14  14.6  ***   24         
ONT    5.2 ***   56   1.6   8.8   9.53   21.1   **   25   2.6        53         
ORE   -4.2       17 -22.3  13.9   5.48   -2.4         6   1.2        12         
QUE   10.0 ***   30   3.2  16.7   6.95   37.6  ***    6   2.1        30         
SAS    0.5       40  -1.7   2.7   9.26   -3.4        18   1.2        29         
WAS    6.8       21  -3.0  16.6   8.34    5.2         7   8.8    *   20         
S04    9.7   *   14  -1.1  20.5   0.42   -5.9        11  17.8         9         
S16   13.4 ***   47   4.8  22.0  14.65   28.0  ***   13   4.8        47         
S18    7.8 ***   50   3.3  12.2  20.48   17.6  ***   23   4.8   **   48         
S28    5.3 ***   64   2.0   8.6   9.84   21.2  ***   19   1.4        60         
S30    1.5       56  -1.6   4.6  12.84   -4.1        20   1.4        52         
S37    6.5   *   29  -0.2  13.3   4.06    4.7        14   8.2   **   23         
S38    7.4  **   40   0.3  14.4  14.18    0.1        21   8.3        33         
S40   25.9 ***   14  13.7  38.1   1.08  220.1         4  29.7  ***   12         
S85    2.2       16  -2.6   6.9  24.71   15.9        10   4.8  ***   15         
S89    1.6       33  -2.9   6.1  13.28    6.4        11   3.0        31         
EA     6.1 ***  226   3.7   8.5   5.81   20.9  ***   80   2.4   **  210         
CE     6.4 ***   83   2.1  10.7   2.47   -5.6    *   31  10.3  ***   73         
WE     2.9      175  -0.8   6.6   5.87   -1.9        74   3.0  ***  144         
RE1    2.5       77  -1.1   6.0   5.63    8.5  ***   37   5.2  ***   63         
RE3    9.1  **   68   1.2  16.9   4.25   12.8  ***   18   3.5        66         
RE5   14.3 ***   70   7.0  21.7   3.99   44.7   **   27   1.7        61         
RE6   11.3   *   63  -1.0  23.6   1.89   -5.0    *   24  16.1  ***   55         
US     6.9 ***  289   4.5   9.2   3.35    8.2  ***  112   5.4  ***  251         
CAN    3.9  **  195   0.8   6.9   7.91    5.5        73   2.1  ***  176         
SUR    4.5 ***  484   2.1   7.0   5.03    6.2       185   3.0  ***  427         

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