Here is a potential niche market idea: chicken sitting!
When chicken owners go out of town, they have to find someone to care for their birds. In steps… the chicken sitter!
This would be a good side gig for someone who likes chickens and has some time to drive around town to take care of other people’s birds while the owners are out of town. If you have ample property and can maintain quarantine of diverse groups of birds, you may be able to do it from home.
Read up on disease prevention in flocks before trying this. Different flocks coexist with different micro-organisms, so it’s important to keep their germs to themselves.