Darzee is the tailor-bird and ally of the mongoose in Rudyard Kipling's "Rikki-Tikki-Tavi." Darzee serves as the messenger for all the animals in the garden, singing songs and spreading the word about the activities of the cobras. He knows all of the garden's secrets, including where Nagaina has laid her eggs. A small and fearful bird, Darzee is often filled with gloom, predicting doom for Rikki's battles with Nag and Nagaina. His warning early in the story saves Rikki's life from the sneak attack by Nagaina, but Darzee prematurely begins singing Rikki's praises after the death of Nag, not realizing that Nagaina's unborn eggs will present a future threat to the garden. Rikki calls Darzee "a stupid tuft of feathers" because of this lack of foresight. Darzee is also "feather-brained" because of his inability to keep more than one thought in his head at a time. Darzee doesn't like the idea of Rikki destroying Nagaina's eggs, since Darzee and his wife also bear their children via an egg. Darzee has married well, however, for his wife helps lead Nagaina from her nest so Rikki can destroy her eggs, and she proves to be the more intelligent of the two tailor-birds.
Darzee is a 'feather-brained fellow' because he does not see the long-term effects of having the cobras (and cobra eggs) in the garden like Rikki-tikki-tavi and Darzee's wife do. In this way, he is certainly not a long-term thinker, you might say. He also lacks courage in many ways because it is his wife, not him, that chooses to help Rikki-tikki to distract Nagaina when he is trying to defeat her. Darzee is a very joyful creature in many ways though, because he tends to only see the positive and rejoices (sometimes too much) whenever something good happens (for instance, when Rikki-tikki kills Nag but still has Nagaina left to fight).
he appears to be a feather brained fellow because he failed to assist rikki in the battle against common enemies,he also lacks intelligence and foresight,and he is able to compose a song on the spur of a moment
Darzee is a bird that has his nest with his wife in the bungalow's garden. The birdis explained as "a feather-brained fellow).