2 sentences

1. 这种鸟类在迁徙季节通常会集群飞行。

   zhè zhǒng niǎo​lèi zài qiān​xǐ jì​jié tōng​cháng huì jí​qún fēi​xíng.

   This species of bird usually flies in flocks during migration season.

   Source: Dong Chinese Dictionary

2. 科学家正在研究这个蜜蜂集群的内部结构。

   kē​xué​jiā zhèng​zài yán​jiū zhè​gè mì​fēng jí​qún de nèi​bù jié​gòu.

   Scientists are studying the internal structure of this bee colony.

   Source: Dong Chinese Dictionary