Question

meaning of mother croon of bird.

Answer 1

* "mother-croon of bird" is the gentle humming voice of a mother-bird to its baby.
* this 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.
explain these lines -
the poet says that the song and mother croon of the birds living on the tree are heard in the quiet evening hours that makes the Twilight are happy for the man who was this song

Answer 2

Answer: The tree planted by man is a home to the mother bird and her child. The mother bird sings sweetly for her child which is known as mother croon of bird.

Hope this helps!!