For Starling Control, the following websites offer some alternatives to avicides (which are tightly regulated in BC i.e. permit restricted):
Integrated Pest Management (IPM) Program:
(IPM Manual for Structural Pests in British Columbia, Chapter 11: Birds)
(IPM Manual for Structural Pests in British Columbia, Chapter 11: Birds)
The following site has good tips for removing starling nests and some caveats about some repellent devices:
Wildlife Damage Control
(U.S. based resource for effective animal damage control supplies and information; members of National Animal Control and the Wildlife Society)
(U.S. based resource for effective animal damage control supplies and information; members of National Animal Control and the Wildlife Society)