Black-headed grosbeak Pheucticus melanocephalus

Region |-----------1959 - 1988 trends----------|                                
        Trend  N   (  95% CI  ) Sign.  Rel. Abu.                                
 CAL    -0.1    20   -0.9   0.7             0.02                                
 TEX     0.1    26   -0.8   0.9             0.02                                
 SUR    -0.1    96   -1.0   0.8             0.03