2. Look at the thick wrinkled skin on the eyelids. It should be an old bird.
The body of young birds is not as thin as the feathers of adult birds.
4. The toenails of adult birds are much longer, the color of the mouth is uniform and sharp, and the mouth of parrots is also long.
Parrots are birds of the order Nautilus. They have many colorful feathers and like to call. A typical bird climber, toe to toe, two toes forward and two toes backward, is suitable for grasping, has a strong beak and can eat hard-shelled fruits.
Feathers are brightly colored and often kept as pets. They are more appreciated and loved by people because of their beautiful feathers and good human language ability. The largest parrot is a purple-blue macaw with a body length of 100 cm, and the smallest parrot is a blue-crowned macaw with a body length of only 12 cm.
Most parrots feed on fruits, seeds, nuts, berries, buds and shoots of plants on trees or on the ground, and also eat a small amount of insects. Honey-sucking parrots feed on pollen, nectar and soft and juicy fruits.
Parrots have many kinds, different shapes and bright feathers. There are luxurious and elegant purple-blue macaws, sunflower cockatoos with white heads in Huang Guan, eloquent Amazon parrots, colorful rainbow honey-sucking parrots, small sunflower-shaped cockatoos, small and exquisite budgerigars and peony parrots, red-green parrots and pigeon-shaped african grey parrot.
Thailand 200 1 issued a set of parrot stamps, namely cockatoo, Alexander parrot, short-tailed parrot and flower-headed parrot; Among them, both red-breasted parrots and parrots have wild populations in China. There are two kinds of cockatoos: Taihō cockatoos and small cockatoos, especially Taihō cockatoos, which are well-known caged birds at home and abroad.
Most parrots feed on fruits, seeds, nuts, berries, buds and shoots of plants on trees or on the ground, and also eat a small amount of insects. Honey-sucking parrots feed on pollen, nectar and soft and juicy fruits.
In the process of foraging, parrots often cooperate with powerful hooked beaks and flexible toe feet. Toe-to-toe feet, two toes forward and two toes backward, suitable for grasping. When climbing the canopy in search of food,
Bite the branch with your mouth first, and then use it on your heel; When walking on a solid tree trunk, insert the tip of your mouth into the tree to balance your body and speed up your movements; When eating, one foot is often used as a "hand" to hold food and stuff it into the mouth.
It is observed that more than 10 species of parrots use their left and right feet when foraging, and it is found that more than 72% of individuals mostly use their left foot to catch food.
The comparative anatomy of hind limb muscles shows that the left foot is obviously longer than the right foot, and the right foot is only slightly longer than the left foot.