The Mast is off the boat I am rewiring it for the lights.
The shop vac idea sounds good tomorrow I will probably try that one 1st,
as for the chimney sweep method, both ends are not open, so it would not work...
The water hose may work if I prop the mast up on my garage roof, ( it is in the driveway right now ) especially after the shop vac loosens things up??
I really do not want to have to try and get the nest out of the entire length of the mast (measured it today 27 feet 7 inches in length) So I am hoping that the shop vac works, I was able to knock most of it out with my wiring installation and the boat hook,....
As for the "what is wrong with birds living in the mast? What would the harm be?" well, no harm for me or them as long as the mast is just sitting across the boat and not in use, but if they are nesting in there in the spring and I want to go out, that would mean disturbed nest and smashed eggs or dead birds, so it is in the best interest of my boat (animal urine and feces are not good for metals and for that matter most materials) and the bird's lives for there to be no nest or nesting material in the mast for them. My boat is a trailer sailer, so, the mast is down when in storage and on the trailer, hope I was able to clarify my point ....
Thank you to all of you who made suggestions,....
Rod