Bat Birds and Mutant Chickens

These are the dangerous Birds in TV Series like Croven's Bat Birds from Thumbelina: A magical Story Episode called "Helula's last Battle" and Mutant Chickens from The Grim Adventures of Billy & Mandy Episode called "Which came first?". These Bat Birds have bat-like Wings instead of Feathers like all normal Birds have and they have sharp Beaks to attack Hobbits, Squirrels, Lemmings and even Deer by pecking on them. These Mutant Chickens have sharp jagged Teeth in their Beaks to rip the Flesh of Humans and Mammals.