It is a bird with big eyes.
Its bronze script is
Its small seal script is
The top part is head and eyes, and the bottom part is character 隹,
which means "small bird".
The current standard script is
雚
Its pinyin is Guan4.
There was another character which has the same meaning about two thousands years ago.
The big seal script for that character is
which is 雚 plus a 鳥 on the right.
which means Bird (big bird).
Its clerical script is
which eventually replaced the 雚.
The current standard script is
鹳
Its pinyin is Guan4, same as that for 雚.
Right now, 雚 is used more often as a radical in characters, which means big bird, not only storks, but owls which have big eys.