{"fact":"A trio of crows, two acting as aggressors and one as an active defender, engaged in a conflict that resembled a coordinated attack and defense, ultimately leading to the death of one crow.","context":"During the third attack, however, the victim was not able to escape and both attackers used their claws to immobilize the victim and their bills to ferociously peck at green’s head…blue entered the fight and provided agonistic support to the victim…Finally, blue flew up and down the aviary calling loudly…green escaped and the two attackers stopped following their victim, which was found dead the next morning.","source":"Benedikt Holtmann; Julia Buskas; Matthew Steele; Kristaps Sokolovskis; Jochen B. W. Wolf, Dominance relationships and coalitionary aggression against conspecifics in female carrion crows, 10.1038/s41598-019-52177-7","index":111}