Another choice of guard fowl are Guinea Hens. You can often get close enough to bribe with treats or poison dogs. While harder it can even be done with geese. I have yet seen anyone or anything get that close to a Guinea without an alarm being given.
If you would like more info try.
http://www.guineafowl.com/fritsfarm/guineas/http://members.aol.com/CELESTmich/guinea.html#DIEThttp://poultryweb.tamu.edu/Extension%20publications/l-519.pdfAs for a generator go with a diesel. They last far longer than any other type of engine. Second the fuel is less volatile and is therefore safer for your storage needs.
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When in danger or in doubt
run in circles scream and shout
RAH
And always remember TANSTAAFL