Behavioural development is an important aspect of research on animal behaviour. In bats, many studies have been conducted on the development of flight behaviour, but the postnatal behavioural development of bats remains largely unexplored. We studied the behaviours and postnatal development of infant bats by conducting controlled video recorded experiments. Our results showed that before weaning, Asian parti-coloured bats (Vespertilio sinensis) were able to exhibit four types of behaviours, namely, crawling, head moving, wing flapping, and wing spreading, and these behaviours are different from those observed in experiments with adult bats. The number of occurrences of these behaviours was correlated with age and scaled mass index. Furthermore, the number of occurrences of these behaviours in young bats could also reflect their physical developmental status. In young bats, wing flapping and spreading might be a type of play behaviour. These behaviours were negatively correlated with the time of the first flight, indicating that they might help to promote individual physical development. Our results provide fundamental data for revealing the ontogenetic and neurophysiological mechanisms of behavioural development in bats.

中文翻译：

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亚洲部分色蝙蝠Vespertilio sinensis的幼仔的行为模式和产后发育。

行为发展是动物行为研究的重要方面。在蝙蝠中，已经进行了许多有关飞行行为发展的研究，但是蝙蝠的产后行为发展在很大程度上尚待探索。我们通过进行受控录像实验研究了蝙蝠的行为和产后发育。我们的研究结果表明，断奶前亚洲蝙蝠（Vespertilio sinensis））能够表现出四种行为，即爬行，头部移动，拍打翅膀和展开翅膀，这些行为与成年蝙蝠实验中观察到的行为不同。这些行为的发生次数与年龄和体重指数成正比。此外，这些行为在年轻蝙蝠中的发生次数也可能反映出它们的身体发育状况。在年轻的蝙蝠中，拍打和展开可能是一种打球行为。这些行为与第一次飞行的时间呈负相关，表明它们可能有助于促进个体的身体发育。我们的研究结果提供了揭示蝙蝠行为发展的本体和神经生理机制的基础数据。