Question

how did the frog plan to destroy the bird's spirit

Answer 1

Hey friend

The frog deviced the plan to finish the nightingale. The Frog compelled The Nightingale to sing non stop in the name of training. He forced her to sing even though it was not in good and favourable weather for her to sing and her throat was not clear. He gave her no rest in that unfavourable weather.So due to exhaustion the nightingale burst her vein and died..
hope it helps 

mark brainlliest

Answer 2

the frog used the nightingle by giving concert's of nightingle and collecting money .. and discriminating the nightingle that she has to practice more for being a professional. the frog used Nightingale to earn money an gave a huge stress on her by which the frog earned money by the talent of nightingle and nightingle lost confidence on it self