Figure 5

Frequency distribution of perch heights (m) for radiotelemetered male (A, n = 9) and female (B, n = 11) brown treesnakes (Boiga irregularis) after snake suppression within the Habitat Management Unit (HMU) on Guam. Notice the difference in the frequency of heights < 0 (underground) between the sexes reflecting an increased use of underground retreats by females.