Frequency of decisions in initial pair contests: effects of sex, observer, and feeding stimulus.
Information obtained from initial pair contests was not increased by concealing the observer behind one-way glass or by presenting feed to pairs of hungry birds.
D000374:Aggression; D000821:Animal Feed; D000818:Animals; D002645:Chickens; D005260:Female; D006801:Humans; D008297:Male; D012737:Sex Factors; D012930:Social Dominance