Answer:
“Mother-croon of bird” is the gentle humming voice of a mother-bird to its baby. The song is not sung in a hushed voice, but it is heard in the hushed moments of twilight, as then the noises in the surroundings gets reduced.
Explanation:
The cyclops effort to move the stone is compared to a simple task, showing his strength.
I'm not 100% positive, but I'm pretty sure the answer has to be false.
Sorry if I'm wrong.
