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. 2009 Nov 25;277(1684):1071–1079. doi: 10.1098/rspb.2009.1769

Figure 3.

Figure 3.

Proportion of new hippocampal neurons expressing doublecortin + s.e. Treatment groups were free-ranging birds (n = 12), captive birds with the opportunity for memory-based cache retrieval experiences (experienced, n = 12) and captive birds deprived of memory-based cache retrieval experiences (deprived, n = 12). Free-ranging birds had a greater proportion of neurons expressing doublecortin than either of the captive groups (both p < 0.001). Experienced birds had a greater proportion of neurons expressing doublecortin than deprived birds (p = 0.019).