Figure 3.

Figures showing the flight response for aviary-reared and cage-reared birds at 19 and 23 weeks of age. Black columns indicate aviary-reared birds. White columns indicate cage-reared birds. The x-axis indicates the zone. Zone 1 was closest to novel object and zone 5 was the start zone farthest away from the novel object. The y-axis indicates the number of birds that did not fly at 19 weeks of age (A), the number of birds that flew at 19 weeks of age (B), the number of birds that did not fly at 23 weeks of age (C) and the number of birds that flew at 23 weeks of age (D).