I think if you want to have your pigeons go on a involuntary hunger strike, then try it. I know peeps that give their chickens fermented feed. It needs to be consumed that day, or risk of it spoiling are there. The claim is that the amount of feed used is less than if given dry. (not fermented) .. I still cant figure out how you can create more food by fermenting it??

I know there are peeps on both sides of this debate.
I have only given my chickens dry feed for over 20 years now. All my chickens are pets, and do live long lives. 13 years was my oldest.
My pigeons were quite selective of the seeds they chose to eat first. That means they must have had TASTE PREFERENCES.

If you ferment the mix,,,,, you will have soft seeds or mush, and tasting one flavor.
Most pigeon mix contains whole corn, rather than cracked corn. Pigeon digestive systems do handle these dry hard objects with no problems. Pigeons do not have teeth to break things down first. I'm not sure if their beaks break down the corn, or it ends in their crop, and gizzard.
Try fermenting a small batch of those pigeon seeds and tell us how they like it..
If they don't, then you can always give to your chickens as treats.
WISHING YOU BEST,,,,,,,,,,,,,,,,,,,,,,,,,,,,,