We have several "trigger happy" members! How can you shoot a gun in City or within the City limits? Even if you lived in country and were allowed to shoot guns in your propery, you'll never going to stop the birds from flying into your orchard and taking some of your fruits (figs or etc...). Have a friend who has a large Apple orchard in counrty, never seen him taking shots at the birds or even mentioning shooting the birds. If you must protect your hard labor, make a tent similar to what Gene and Ken have made.
Having few mature trees that are 5+ yers old will help in forgetting about the birds. Since there will be plenty of figs will be left from those plants and the younger ones for you.
Please, forget about option five. As far as I know, anything toxic to mammals will be toxic to environment as well. By using toxic baits, one can poison a whole food chain. From birds of preys, Raccoms, cats and etc... And maybe the neighbor's pets that find the poisioned Sparrow or etc....
Netting would be the best option. Although, I never net any of my trees. Maybe I am lucky that birds around my property do not like the figs. And if they go for them, they only go after my Conadria.
Navid.