Serinian Boarbird (5e Creature)
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Medium beast, unaligned
Brutish. When the Boarbird reduces a creature to 0 hit points it gains 5 (1d4 + 3) temporary hit points.
Carrion consumer. The Boarbird has advantage on attack rolls against creatures that are dead or have died.
Toothed beak. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 4 (1d4 + 2) piercing damage, and if the target is living (not a construct, elemental, or undead) it must make a dc 13 constitution saving throw, or have the wound be infected with rotting meat, taking 1d4 extra points of poison damage, and taking an additional 1d4 points of poison damage every 10 minutes until they use an action to make a dc 13 medicine check.
The Boarbird is a boar-sized Bird decended from the Serinian canary. They typically scavenge rotting meat, but can fall back on plant-matter for a time if needed.