Henrietta

Dame Henrietta Cluckington, first of her name, is the esteemed companion and loyal protector of the hobgoblin Ward. She fights for him in battle, but otherwise does as she pleases.
=== Appearance ===
Henrietta is an especially fat and fluffy chicken. She may have once been colorful, but her feathers have begun to grey, and she's gone fully blind in her old age.
=== Mechanics ===
She is a regular chicken, except also a fey, because that is how the Find Familiar spell works. She understands Sylvan and, after much schooling and training with Ward, Common. She uses the Abyssal Chicken stat block because it's funny.