Don't know where you are, but the same thing happens to me...caused by the pounding the blossoms get from the rainstorms we've been having. Could be rain, or perhaps your method of watering? Blossoms fall off eventually anyway, so its really not a problem unless you need them for pollenation.

My understanding is the life of a male blossom is only a couple days. After it blooms a couple days, it falls off just like you describe.

I've never used them, but I've heard that they are pretty tasty. There are several recipes out there for stuffed zucchini blossoms.

squash blossoms taste great. You can pick them in the evening before they open or the next morning after they open. Do not wait too long or they lose their appeal.

The blossom is only good for one day. After that it is done. Actuually it is good all night and early morning and then it gets hot and dry or wet and it is no good.

Being a male blossom is not about being a flower. It is about getting its pollen over to the female.