American wigeon Anas americana

                                   
                                                                                
                                                                                
Area|--------1966-1994 trends--------| |--1966-1979---||--1980-1994---|         
     Trend  P    N  (  95% CI  )  R.A.  Trend   P    N  Trend   P    N          
ALB   -0.6       37  -5.1   3.8   2.83    3.4        20   6.5        33         
MON    4.6       25  -3.2  12.4   1.86    4.4         8  16.7   **   23         
ND    -2.1       23 -12.7   8.4   0.93  -17.5  ***   12   7.4        19         
SAS   -2.3  **   45  -4.5   0.0   4.46   -1.8        26  -5.9  ***   34         
WYO    5.6       20 -10.6  21.8   0.97    1.7         4   6.5        18         
S30   -1.9       51  -4.3   0.6   2.63   -2.9        23  -3.8    *   45         
S37   -1.1       31  -5.4   3.2   2.30   -1.1        19  13.7   **   26         
S38   -2.1       36  -6.1   1.9   3.41    4.1        20   3.5        26         
S39    4.9  **   35   0.3   9.5   1.17   11.7   **   16  10.2        30         
CE     1.8       75  -2.1   5.6   0.95    1.8        35   9.2    *   61         
WE    -1.1      131  -2.9   0.7   1.42   -0.7        56  -0.9       112         
RE1    8.3 ***   20   2.8  13.7   0.24  -41.8  ***    6   4.3        17         
RE6    3.1   *   84  -0.5   6.8   1.00    2.7        31  10.2   **   74         
US     4.2 ***  106   1.1   7.2   0.68    0.8        38   9.1   **   92         
CAN   -1.0      110  -2.8   0.9   1.80   -0.2        59  -1.7        88         
SUR   -0.3      216  -2.0   1.3   1.14   -0.2        97   1.7       180         

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