Violet-green swallow Tachycineta thalassina

Region |-----------1959 - 1988 trends----------|                                
        Trend  N   (  95% CI  ) Sign.  Rel. Abu.                                
 CAL     0.6    65   -1.4   2.7             0.85                                
 SUR     0.8    82   -1.3   3.0             0.67