Chinstrap

A bridle, the chin-strap or chain.

Such a deficit was not likely long to escape notice: the regiment was halted in the midst of a manœuvre, and, in the pause that ensued, Nosey demanded, in a grunt of thunder, how, without a chinstrap, I could expect my cap to stick upon my head.

I immediately spat my mouthpiece out and unbuckled my chinstrap, yanking my helmet off of my head in a determined flash.

A miniature look-alike of the Canada Goose, with a partial white necklace instead of a white chinstrap.

The dark slate-grey plumage contrasting strongly with white 'chinstrap' is shared only by Blue Eared-pheasant, but their ranges do not overlap.