Pigeons and Crow in fight

Today have seen an amazing thing , two pigeons fighting for their "kids" life with a huge crow , I never belived that could fight with
so much power and anger, Crow tried to kill and eat Pigeon's egs or baby , every time she/he was near nest one of pigeons flied right into the enemy (Kamikaze) .. so on .. Like dog fighting aircrafts rushing each other .