3 sentences

1. 公鸡在清晨打鸣。

   gōng​jī zài qīng​chén dǎ​míng.

   The rooster crows at dawn.

   Source: Dong Chinese Dictionary

2. 这只公鸡的头顶上长着红红的肉冠。

   zhè zhī gōng​jī de tóu​dǐng shàng zhǎng zhe hóng hóng de ròu guān.

   This rooster has a red comb on its head.

   Source: Dong Chinese Dictionary

3. 公鸡喔喔地叫，预示着新的一天开始了。

   gōng​jī wō wō de jiào, yù​shì zhe xīn de yī tiān kāi​shǐ le.

   The rooster's crowing heralds the start of a new day.

   Source: Dong Chinese Dictionary