a membrane that connects the toes of certain aquatic birds, such as ducks and coots, enabling them to swim with greater ease
卷筒纸
the rectum or external opening in some animals, such as a fish, bird, etc., through which waste is passed
发泄
a pointed extension of bone that grows from the leg or foot and is used for defense, mating rituals, or establishing dominance within a social group
骨剂
the outermost part of a bird's wing that includes the primary feathers and contributes to the bird's flight maneuverability and stability
翼尖
a decorative and frilled collar-like structure made of feathers or hair that encircles the neck of a bird
鸽之一种
the muscular part of a bird's digestive system with thick walls that grinds the food for a better digestion
肫
a prominent feature exhibited by some birds on their heads, consisting of feathers, fur, or skin
波峰
a fleshy, often brightly colored, crest located on top of the head of certain bird species
梳
a fleshy, comb-like growth on top of the head of certain domestic roosters and other bird species
鸡冠
the long erectile feather or hair in the neck area of some birds and mammals such as dogs
乱砍
a type of small, fluffy feather that covers the base of a bird's larger flight feathers, providing insulation and helping to streamline the bird's wing shape
隐蔽的羽毛
the feathers on the underside of a bird's wing, which can have distinctive patterns and colors that are often visible in flight
翼下
the small feathers on a bird's wing that cover the larger feathers and help the bird fly better
较小的隐蔽生物
a small feather that covers the base of a bigger feather on the wings or tail, helping the bird to fly better by keeping it warm and streamlined
暗处
a feather on the wing that helps with stability and maneuverability during flight. It's located between the flight feathers and the bird's body
三级的
the lower part of the leg, located between the shank and the foot, providing support and flexibility for perching and walking
睑板
a line of color that goes across or behind the eye of a bird, making the bird's eye and facial features more noticeable
眼纹
a glandular organ found in the digestive system of birds that functions in the initial breakdown of food before it enters the stomach
腺胃