Table 3 Random sample of terms extracted by Step 5a.

high investment

matching neighbour song

greater reduction

soldier bug predation

major force favouring

stranger song

eavesdropping and mate choice

severe matriline based aggression

mormoniella and pachycrepoideuspolyandry

dashing

threat grunt

acid metabolism

total attraction

taeniopygia guttatasong

location and spacing

acoustic response

orienting response

prior winning

memorize heterospecific song

daytime rest and sleep behaviour

diet selection behaviour

sexual and courtship behaviour

mass rearing

xiphophorusfemale preference

diurnal activity

utetheisa ornatrixsite dependent aggression

locomotor behaviour

noise interference