Feral Pigeon(Rock Pigeon)

Spotted in Vandoma area in the back of the catredal begining to descend to the river,the arc is beautiful.
i think she is nesting but i dont saw signs of the nest,maybee is hide,the little white feadder she as in the chest is a sign of nestinf,they wrap this kind of feadder's to make a worm nest for chicks,i'll pass there another time to se