Ring-necked duck Aythya collaris

                                   
                                                                                
                                                                                
Area|--------1966-1994 trends--------| |--1966-1979---||--1980-1994---|         
     Trend  P    N  (  95% CI  )  R.A.  Trend   P    N  Trend   P    N          
S28    2.6       22  -4.4   9.6   0.18   -9.7   **   12   8.5   **   14         
S30    2.0       20  -9.8  13.8   0.32    2.1         5  -9.0        16         
S64    1.2       16 -11.5  13.8   0.30    0.6         4   4.4        15         
EA     2.7       40  -4.1   9.5   0.10   -9.0  ***   22  10.8  ***   21         
WE    12.3 ***   49   5.0  19.6   0.23   -2.6         8   5.3        44         
RE3    6.4       17  -9.3  22.0   0.09  -21.1  ***    7  14.1  ***    9         
US    68.0 ***   41  53.1  82.9   0.09  -19.4  ***   11  16.2  ***   29         
CAN    2.3       57  -2.7   7.3   0.19   -5.6   **   22   6.7   **   42         
SUR    6.1  **   98   1.1  11.1   0.16   -6.5  ***   33   7.4  ***   71         

More Ring-necked duck information: