Question

what changes came in nightingales performance of the frogs training

Answer 1

Nightingales became so weak. Nightingales sweet voice fade away slowly..

Answer 2

After frog's traning the nightingale doesn't sung well . The nightingale had to bear scolding and exploitation at the hands of the frog. All craetures in the bog responded to nightingale's song positively. But after frog's training nightingale sung very badly. No one responded her song positively. At the end , the nightingales died with her excretions.