I don't know for sure, but it could be the 'bird of a different feather' itself as the main character.
There's a good chance that the unique bird is one of the main characters. However, there might also be other characters that interact with it. Maybe there's a human or another creature that befriends or opposes the different bird. Without reading the fanfiction, it's hard to say exactly who the main characters are, but it's likely centered around the bird and those who are affected by its 'different feather' so to speak.
Since it's fanfiction, it could draw from existing characters in the source material and add the 'bird of a different feather' as a new main character. For example, if it's based on a fantasy world with elves and dwarves, the bird could be the main character while the elves and dwarves play supporting roles. Or perhaps there are other original characters created specifically for this fanfiction that interact with the unique bird in important ways, such as a wizard who tries to study the bird's special abilities or a thief who wants to steal something from the bird.
Chapter 134, ", What Trash is the Agent?", is the clearest early answer because it turns Gu Hang's situation into a concrete plot event. Early on, After hearing Dennison Henry's report, Gu Hang mused, "So what do you.... By the end, That's if the road is clear.. Inside the broader technology upgrade storyline, the chapter closes with Henry clapped his hands, smiling: "Exactly. Mr. Gu intends to mobilize the army and take down Rubbish Town.
Chapter 176, ", Making Dumplings", is the clearest early answer because it turns Anti's situation into a concrete plot event. A useful checkpoint is the way the scene starts with He stared blankly at the pitch-black muzzle as it emitted a burst of... and follows through with This is the second time content was deleted without my knowledge;....
Chapter 114, ", Among mortals, there are also heroes.", is the clearest early answer because it turns Tadeusz's situation into a concrete plot event. The chapter turns that into something concrete by moving from Tadeusz didn't know how he had done it. to In his confusion, Tadeusz was enveloped by a white fog, and then he....
Chapter 237, ", Can I Also Ascend to Godhood?", is the clearest early answer because it turns Also Ascend's situation into a concrete plot event. The chapter gives readers a real answer by opening on They might not understand much, but seeing Mr. and ending on Her softened attitude, the assistance she spoke of, paradoxically.... In story terms, the chapter closes with Or...
Chapter 250, ", Subtle", is the clearest early answer because it turns Star Language Tower's situation into a concrete plot event. The chapter gives readers a real answer by opening on On the day of the incident at Heijian Star, Gu Hang was already... and ending on In addition, there were over a hundred Wind Falcon aircraft in the....
Chapter 165, ", Naval Battle Settlement", is the clearest early answer because the buildup finally cashes out in a real clash. Early on, She could only focus all her attention on commanding the naval battle.. By the end, Had it not been for the ongoing space naval battle outside the.... Inside the broader family politics storyline, the danger stops being abstract and the conflict around Escort Ships becomes immediate, forcing the surrounding cast to react under pressure.
Chapter 189, ", Allied Air Force, Ace Pilot Requests to Enter the Battle!", is the clearest early answer because the buildup finally cashes out in a real clash. The setup is Ace pilot, requesting to engage!" "Enemy spotted at twelve o'clock!"..., but the pressure keeps building through Some wanted to complain, but in the end, there was silence on the....
Chapter 200, ", The Governor's Concept of the Phoenix", is the clearest early answer because it turns Priest Rizzo's situation into a concrete plot event. The chapter turns that into something concrete by moving from Before the surgery began, Anat and his two friends were all quite... to This process could take anywhere from six months to two years,.... What makes it stick is that the chapter closes with "Of course, it's okay. Their condition is very stable, unlike the previous batch.
Chapter 139, ", just because he is the governor?", is the clearest early answer because it turns Henry's situation into a concrete plot event. A useful checkpoint is the way the scene starts with He didn't know much about military matters, but he understood the... and follows through with There were those who advocated for holding out, and others for giving....
Chapter 232, ", Witnessing the Shock of Mortals", is the clearest early answer because it turns Iron Will's situation into a concrete plot event. The chapter turns that into something concrete by moving from When Gu Hang arrived in this space— one which didn't belong to the... to Star Realm Tunnels were made of Spiritual Energy, also located in the....