Keen Sight. The  Slaughter Shrike has advantage on Wisdom (Perception) checks that rely on sight.

Powerful Build. The Shrike counts as one size larger when determining its carrying capacity and the weight she can push, drag, or lift.

Multiattack. The Shrike makes three attacks with its barbed tails, it can choose to replace one attack with either its jagged beak or talons. 

Jagged Beak. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 8 (1d8+3) piercing damage. A creature hit by this attack also needs to make a DC 14 Constitution saving throw on a failure a creature takes half the damage it took on the previous turn. On a success, a creature doesn't suffer this effect. 

Talons. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 11 (2d6+4) slashing damage.

Barbed Tail. Melee Weapon Attack: +7 to hit, reach 15 ft., one target. Hit: 10 (1d10+4) piercing damage. When a creature is hit it needed to make a Strength saving throw DC 14 or the creature becomes grappled. a creature grappled in this way can be moved without halving the shrike turn, and only one creature can be grappled in this way per tail. 

Shrieking Wind (recharge 6). The Shrike can flap its four wings, creating a sphere of wind around 20 ft of itself. any creature within range must make a Strength Saving throw DC 14 otherwise a creature is pushed up to 20 ft away and knocked prone. This Wind lasts for 1d4 rounds, while this is the case the Shrike cannot move, and ranged attacks against the Shrike have disadvantage.