When more dynamic verbs are involved, a structure which is an extension of 有 yǒu sentences has to be employed. For example,
树上有两只鸟儿在歌唱。
Shù shàng yǒu liǎng zhī niǎo ér zài gē chàng 。
There are two birds singing in the trees.
花丛中有很多蜜蜂在采蜜。
Huā cóng zhōng yǒu hěn duō mì fēng zài cǎi mì 。
There are a lot of bees collecting honey amongst the flowers.
图书馆里有不少学生在查资料。
Tú shū guǎn lǐ yǒu bú shǎo xué shēng zài chá zī liào 。
There are quite a few students looking up references in the library.
[1] Yip, P. C., Rimmington, D., Xiaoming, Z., & Henson, R. (2009). Basic Chinese: a grammar and workbook. Taylor & Francis.