Value Points :
The nightingale is not a brainless bird-highly talented; her only fault is that she is trusting and unsuspecting and all such beings are credulous; her chief shortcoming is credulity.
Detailed Answer :
The nightingale is not a brainless bird. She is a highly talented bird who is not aware of her talent. Her only fault is that she is trusting and unsuspecting. She is misled by the evil frog who only wishes her ill. Her chief shortcoming is credulity.
