Table 2. Calculation of hazard indices based on six life-history traits that potentially increase species' vulnerability to fire ant impacts. A + indicates vulnerability. Hazard indices are produced by dividing the number of hazards to which targets are vulnerable by the total number of potential hazards.



soft
ground
ground
altricial
spring/summer
hazard
Species
ovipary
shelled
nesting
foraging
young
young
index
Common ground-dove
+
-
+
+
+
+
0.83
Swallow-tailed kite
+
-
+
-
+
+
0.67