Gular skin

Gular skin
Male frigatebird with his gular sac inflated
Details
Synonymsgular sac, gular pouch, throat skin, throat sac, throat pouch
SystemIntegumentary system
Anatomical terminology

Gular skin (throat skin), in ornithology, is an area of featherless skin on birds that joins the lower mandible of the beak (or bill) to the bird's neck. Other vertebrate taxa may have a comparable anatomical structure that is referred to as either a gular sac, throat sac, vocal sac or gular fold.