Some jobs birds have been forced/trained to perform through history and cultures, I'm sure I've missed a few:

Fisher: https://en.wikipedia.org/wiki/Cormorant_fishing

Hunter: https://en.wikipedia.org/wiki/Falconry

Racer: https://en.wikipedia.org/wiki/Pigeon_racing

Mount: https://en.wikipedia.org/wiki/Common_ostrich#Racing

Fortune teller: https://en.wikipedia.org/wiki/Ornithomancy

Fighter: https://en.wikipedia.org/wiki/Cockfight