Survival of pen-reared hens (7.8 ± 2.4% SE) was lower (P < 0.001) than that of wild hens (54.6 ± 6.6%) during the 181-day reproductive period because of higher (P < 0.001) predation (90.3 ± 2.9% and 45.4 ± 6.6%, respectively). Fewer (P < 0.001) pen-reared hens (21%) ...
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