(1)Birds rose high into the air（正确）

(2)Birds rose high into air(错误）

原因如下

(1)air 表示物质名词“空气”（无定冠词the）

(2)the air表示“天空，空中”（有定冠词the）

air和the air英语解释和例句如下

(1)air 空气；大气 （英文解释：Air is the mixture of gases which forms the earth's atmosphere and which we breathe.）

Draughts help to circulate air. 

穿堂风有助于空气流通。

Keith opened the window and leaned out into the cold air.  

基思打开窗户，探出身到冷风中。

(2)the air 天空；空中；空间 (英文解释：The air is the space around things or above the ground.）

Government troops broke up the protest by firing their guns in the air. 政府军队朝天鸣枪驱散了抗议人群。

People's cigarette smoke seemed to hang in the air.  

人们吸烟的烟雾似乎会长时间滞留在空气中。