Redhead Aythya americana
Region |-----------1959 - 1988 trends----------|
Trend N ( 95% CI ) Sign. Rel. Abu.
ALA -0.1 17 -5.7 5.4 1.07
ARI 1.1 37 -3.0 5.1 1.96
BC -4.9 20 -17.5 7.8 12.89
CAL 0.6 109 -2.4 3.5 2.73
COL 0.8 22 -2.3 3.9 1.07
FLA 2.0 44 -6.7 10.6 33.57
GA 1.7 19 0.0 3.4 * 0.24
ILL 0.5 32 -1.4 2.4 0.28
IND 0.4 27 -1.3 2.1 0.41
IA 0.8 15 -1.0 2.5 0.28
KAN 1.8 29 -1.3 4.9 0.68
LA -2.7 18 -5.2 -0.3 ** 0.71
MD -11.7 26 -20.9 -2.6 ** 7.35
MAS 2.1 19 -3.7 7.8 0.59
MIC 18.2 36 -1.7 38.1 * 12.97
MIS -1.1 14 -3.7 1.5 0.84
MO 1.4 23 -1.2 4.0 0.47
NJ 0.1 23 -1.0 1.2 1.11
NM -1.3 21 -4.9 2.2 25.02
NY -10.8 47 -23.8 2.3 28.90
NC 6.7 32 -2.8 16.3 22.19
OHI 1.8 48 -0.2 3.9 * 0.60
OKL 0.1 19 -1.6 1.8 1.62
ONT 2.6 38 -1.3 6.4 1.35
ORE -1.3 23 -7.8 5.2 3.34
PA 4.3 35 0.3 8.2 ** 4.35
TEN -0.2 20 -4.1 3.8 1.24
TEX -4.5 99 -9.8 0.8 * 195.79
VA 2.8 35 0.1 5.4 ** 0.74
WAS 6.8 24 -2.0 15.6 3.42
WIS -0.3 18 -1.4 0.9 0.68
SUR -3.4 1125 -7.5 0.8 53.56