Yes.
soft
simile, it uses 'as'
Yes, the phrase "Her voice was as beautiful as a singing bird" is a simile. A simile is a figure of speech that compares two different things using the words "like" or "as." In this case, the comparison is being made between the beauty of her voice and the beauty of a singing bird, using the word "as" to draw the connection.
Yes.
as happy as a lark, clown, lady bug, etc.
The birds are singing again!
Bird make our lives happier by singing and just by being beautiful. It makes us happy to see them fly, or sing, or just sit in a tree sometimes.
Happy as a clam/a sandboy/Larry.
warm, the days are warm when the birds start singing in the spring.
Larry?
no it is not a metaphor because it is a simile.
The little children were as happy as clams at high tide.