Male vigilance and presence are important for foraging by female Chinese grouse in the pre-incubation period

摘要: In some monogamous birds, males invest more time in vigilance than females, especially during the pre-incubation period. As behaviors are costly, there is a tradeoff between and feeding behavior. Male can be regarded as male investment their mates may benefit female by reducing danger of predation, increasing her probability survival, allowing for to forage obtain resources egg production incubation. this study, we documented proportion spent Chinese grouse Tetrastes sewerzowi with alone period, then estimated under severe predation pressures through predator call playback. Our results indicated that paired spend unpaired females could alter activity budgets response social context (i.e. without mate) an experimental e...