I don't know why a pigeon house is called a loft instead of a coop. People ask, not quite sure. Best guess would be that it's recommended to have high up perches in the loft, and maybe that's why.
Anyway, I've had a few people comment that they really can't picture this thing, so I took some pictures. Camera phone, so not great ones, but here we go:
That's just a tarp over the top, just uncovered the front for pictures.... That top left door opens down, and is meant to do that so that it can be left open so the pigeons can fly back in.
As you can see in the picture above, the door that folds down will actually fold flat against the cage (if the other door wasn't in the way). Going to attach some snap-on chain to hold it open at a 90 degree angle so the door will form an L shape with the loft. Just haven't gotten to that yet. you can see on the bottom, the 2 x 4's... can't see it on the picture, but there is hardware cloth (same as on the doors) attached, so everything falls through, but no pigeons escape the bottom).
And last but not least, look above, you can see the inside. Need to do something about the left side, where there's no shelves, but the right has the ledges, and then upside down V perches in the middle, and there's a perch going all the way around the top of the cage. And you can see the hardware cloth on the bottom of the cage here.