鳥がなく
Hello,
I'm studying a nursery rhyme, but I don't find the meaning of one verb : なく
When I type 鳥がなくin google translate it says "there is no bird".
Here is the verb in its context:
鳥がなく 鳥がなく どこでなく
山でなく 里でなく
野でもなく
I understand the rest. Does "なく" mean "to sing" ?
Thank you