Undead Fortitude. If damage reduces the swarm to 0 hit points, it must make a Constitution saving throw with a DC of 10 + the damage taken, unless the damage is radiant or from a critical hit. On a success, the zombie drops to 10 hit point instead.

Swarm. The swarm can occupy another creature’s space and vice versa, and the swarm can move through any opening large enough for a Tiny bat. The swarm can’t regain hit points or gain temporary hit points.

Flurry Of Peck. peck: +6/+3to hit, reach 5 ft., 1 target. Hit:  8 (11d4 -4 ) / 4 (5d4-2 ) Piercing damage and has to make an 11 DC Con save on a failure the target take 4d6 / 2d6 poison damage and becomes infected with zombie-ism. If below 10 hit points use the second damages.

Enter the description for how legendary actions work for your monster here.

Legendary Action Name (Costs 2 Actions). Super peck +3, 5ft, 1target, Hit 3 (3d4 - 1) Piercing damage

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