If certain sentences were shortened they might have made a greater impact. Long sentences can become clumsy and unwieldy where punctuation is lacking.
"Far away in a picturesque jungle a tiny little bird with a rainbow painted sky flew across". Sentence is a little disjointed. The rainbow painted sky belongs to the picturesque jungle not to the tiny little bird.
The reference to the bird changes from 'he/him' to 'it' frequently and can be confusing to the reader.
Subject to the above, it's a nice feel-good story and the respect for nature comes across clearly, as does the message that small in stature doesn't necessarily mean weak.