Angry Birds Evolution/Sets

 Sets are groups that include birds that have something that defines them, Set Birds have exclusive bonuses. Those are them:

Flocksburg Eagles
The description reads:
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The pigs will go crazy when these cuties perform, showering you with Power-Ups!

These are cheerleader birds that are defined by red bows on their hair. Their Leader Bonus is the following:

Cheerleader Attraction
''Attract Cheerleaders to the battle to support the team. Additionally spectators are more likely to drop Power Ups the more set birds present.'' Those are the birds: The description reads:
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Unleash crazy combos with Power Ups!

These are football birds that are defined by uniforms. Their Leader Bonus is unknown.

Those are the birds:

Ragin' Rockers
The description reads:
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Bird fans are sure to watch your battles and lend some help ROCKSTAR STYLE!

They are rock singer birds that wear jackets and evolve with facepaint and other features, then they will evolve into unique evolutions. Their Leader Bonus is the following:

World Famous
''The bird's fame attracts fans. Hitting a fan increases a bird's damage by 10% times the amount of present rockstars for the turn.''

Those are the birds: The name was Rockband. The description reads:
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Play with all 5 rockband members in your team to replace the battle music with awesome Heavy Metal music!

They are rock singer birds that wear suspender-pants and evolve with facepaint and other features, then they will evolve into unique evolutions. Their Leader Bonus is the following:

World Famous
''The bird's fame attracts fans. Hitting a fan increases a bird's damage by 10% times the amount of present rockstars for the turn.''

Those are the birds:

Sports AllStars
These birds make a sport out of beating pigs gracefully.Only the strongest types of birds get pumped up by so much competition in one team!

They are birds related to sports, they wear an uniform and evolve with something that is essential in their sports, such as helmets. Their Leader Bonus is special for each of them.

Those are the birds:

Core Flock
The description reads:

It’s the Core Flock from the Angry Birds Movie!

Those are the birds: