yup, we've eaten pigeon eggs, mostly just to see what they are like. Small eggs. I noticed the whites were a little more 'transparent'. The texture of the white is a little different, but okay. Like most birds, the egg flavor reflects what the birds are feeding on.
I tried once, to boil the little things. Probably too fresh, as I had an awful time peeling them, was practically left with just the little yolks.
Scrambled up with chicken eggs, you'd never know they were there.
For me, they are just too small to bother with, usually (but I don't have big squabbers, just racer type). I will boil up and mash a bunch and feed to my other critters, tho. My cats enjoy a small raw one, every once in a while.