Fig. 10From: Effects of the social environment during adolescence on the development of social behaviour, hormones and morphology in male zebra finches (Taeniopygia guttata)Aggressiveness in adulthood. a Males from groups initiated more chases when their opponent was from a juvenile pair than when he was from the other group treatment, whereas males from juvenile pairs directed few chases towards males from either group treatment. b Males from groups received fewer chases than males from juvenile pairs from all interaction partners. For details, see text. Shown are means ± SE for each age. Sample sizes are shown directly above the x-axisBack to article page