Genre: Fantasy/Adventure

Characters:

• Red: A young, outcast red bird with hidden powers, destined to save Bird Island. He's initially insecure and unsure of himself, but grows in confidence and strength throughout the story.
• Chuck: Red's adoptive brother, quick and agile. He provides comic relief and acts as a loyal friend.
• Bomb: Red's adoptive brother, strong and explosive (literally!). He offers brute force and unwavering support.
• Flare: An ancient, wise elder bird who knows the prophecy and guides Red. He acts as a mentor figure.
• Zipzap: A swift and agile bird, skilled in aerial combat. He adds a strategic element to the team.
• Arial: A bird with exceptional flying skills, providing aerial support and reconnaissance.
• Grounder: A strong and sturdy bird, adept at ground combat. He provides a grounded perspective and physical strength.
• Ruby: A powerful, corrupted red bird controlled by the Mighty Boar. She initially serves as the antagonist but undergoes a redemption arc.
• The Mighty Boar: The main antagonist, a powerful and ruthless leader of the boar army. He seeks to conquer Bird Island.

Setting:

Bird Island, a lush and vibrant island home to various bird species. The story unfolds in different locations on the island, including a sacred temple, a dense forest, and the mysterious Dark Void.

Plot Elements:

• Prophecy: The prophecy foretelling Red's role in saving Bird Island from the boars.
• Outcast Hero: Red's journey from being an outcast to becoming a hero.
• Teamwork: The importance of teamwork and friendship in overcoming adversity.
• Redemption: Ruby's transformation from an evil bird to a reformed ally.
• Hidden Powers: Red's discovery and mastery of his unique abilities.
• Confrontation with Evil: The final battle between Red and the Mighty Boar.

Length: Long (novel-length potential)

Detailed Story Outline:

Part 1: The Prophecy and the Escape

• Introduction to Bird Island and the Angry Birds.
• The prophecy of the red bird is revealed.
• The boar attack on the temple and Flare's escape with the red egg.
• Red's childhood and his struggles with being different.
• The boar attack on Chuck and Bomb, triggering Red's powers.
• Red's revelation of his powers and his subsequent running away.
• Chuck and Bomb follow Red and find Flare.

Part 2: Training and Gathering the Team

• Flare reveals Red's destiny and trains him in his powers.
• Red's journey to find and save Zipzap, Arial, and Grounder.
• Each rescue mission showcases Red's growing abilities and the unique skills of his team members.
• The team learns about Ruby and the Mighty Boar's plan.

Part 3: Confrontation and Redemption

• Red's journey to the Dark Void to confront Ruby.
• The battle with Ruby, showcasing a clash of powers.
• Ruby's redemption and alliance with Red.
• The final confrontation with the Mighty Boar and his army.
• The combined forces of Red and his team defeat the Mighty Boar.

Part 4: A New Beginning

• The rebuilding of Bird Island and the celebration of victory.
• Red's acceptance and integration into the Angry Birds community.
• The establishment of a new era of peace and prosperity on Bird Island.
• A hint at future adventures and challenges for Red and his team.

This detailed outline provides a comprehensive structure for a long-form story based on the provided prompt. The narrative can be further enriched with subplots, character development, and detailed descriptions of the setting and action sequences.