Boobirds

2 clues
Unhappy fans, in slang
Disgruntled fans, slangily
Similar answers:
Abirds
Abirdseyeview
Abraceofbirds
Alertwaterbirds
Angrybirds
Bairds
Bambooberry
Bamboobooshoots
Birds
Birdsah
Birdsanctuaries
Birdsanctuary
Birdsandthebeads
Birdsandthebees
Birdsandthebreeze
Birdseed
Birdseeds
Birdseggs
Birdseye
Birdseyeview