Multiattack

Two Bites or one Bite and one Constrict.

Bite

Melee Weapon Attack: +5 to hit, 10 ft., one creature,. 7 (1d8+3) piercing damage + 7 (2d6) poison and the target must make DC 13 Con save or be poisoned for 1 min. The target can re-save at end of each of its turns success ends effect on itself.

Constrict

Melee Weapon Attack: +5 to hit, 5 ft., one creature,. 14 (2d10+3) bludgeoning damage and target is grappled (escape DC 13). Until grapple ends creature is restrained and bird can't constrict another target.