Are goose droppings, particularily Canadian, okay as a fertilzer?

Sure. Doesn't matter what the critter, it's all fertilizer. It's not good to put fresh poo too close to plants, as fresh stuff can and will burn tiny roots. Use older poo, like 6 months or older.

my dad's mom would put it on the garden pathways. It was mixed with hay, and didn't burn anything. At the end of the season it was all plowed under.

But bird 'stuff' is very strong (burns plants), so do be careful with the fresh stuff.

The droppings from geese are poultry manure, usually kind of high in Nitrogen. However, like any other manure they should be composted first and not spread directly on the garden because of the potential diseases that may be present. There are many really lucky people out there that have not been afflicted with one of these but the FDA, NIH, and CDC have all been working on finding the source of salmonella contamination that has causes 1,000s of people to get sick in the last 6 months, or so.