-
Different body types and different feather colors.
1. Sparrows are almost the same size and color, generally brown or black, so they are commonly known as sparrows.
2. Swallows. The body size is small, the wings are pointed and narrow, and the feathers are not too many. Plumage.
The color is very simple, generally blue or green with a metallic sheen.
3. The pigeon is on the large side, and the wings are wide and round. Feathers are abundant. The color of the feather coat is more white with a small amount of gray.
-
Swallows, sparrows, and pigeons have certain differences in terms of body size, feather color, and living environment. In general, swallows are smaller in size and have a single feather color, pigeons are larger in size and have a predominantly white feather color, while sparrows are smaller in size and have brown or black feathers. Here's a comparison:
1.Body size: Swallows are smaller, with pointy and narrow wings and not too many feathers. The pigeon is on the large side, with wide, round wings and abundant feathers. Sparrows are smaller in size with short bodies and comparatively short wings.
2.Feather color: The swallow's feather coat is monochromatic, generally blue or green with a metallic sheen. The color of the pigeon's feather coat is more white with a little gray. The feathers of sparrows are almost the same color, generally brown or black, so they are commonly known as sparrows.
3.Living environment: Swallows live in tree cavities or crevices, pigeons live on branches, and sparrows live in bushes and grasses.
In summary, swallows, sparrows, and pigeons have their own characteristics in terms of size, feather color, and living environment.
-
Sparrows and pigeons have similarities in their bodies:They both have two wings, and both fly on their wings. They all have beaks.
None of them have teeth. None of them have an organ dedicated to urinating. They don't have stomachs, they all rely on vegetariansDigest foodTarget.
Presentation of animals. Sparrows are in the finch family, the genus Sparrows.
A collective term for 27 species of small birds. They are very similar in size and color. Generally, the upper body is brown and black patchy, so it is commonly known as sparrow.
There are 9 primary flight feathers, and the pale feathers on the outer feathers (except for the first one) are at the base and proximal ends, slightly enlarged, intertwined, and slightly divided into two transverse spots, which are especially obvious when flying. The mouth is short, thick and strong, conical in shape, with a slightly curved peak.
Pigeons, a very common bird, are widely bred around the world, and are a collective name for hundreds of species of birds in the family of doves of the order Dove. The pigeon we usually talk about is only one of the pigeon genus, and it is a domestic pigeon, and the most common of the domestic pigeons is the carrier pigeon, which is mainly used for communication and racing. Pigeons have been living with humans for thousands of years.
Morphological characteristics. Sparrows are small birds that are very similar in size and body color. Generally, the upper body is brown and black patchy, so it is commonly known as sparrow.
There are 9 primary flight feathers, the pale feathers of the outer feathers (except for the first one) are at the base and the proximal end, the shape is slightly expanded, and the front of each other collapses like embellishments, slightly divided into two transverse spots, especially obvious when flying. The mouth is short, thick and strong, conical in shape, with a slightly curved peak.
The pigeon has a flat head on its head.
The body is large and broad, 53-56 cm long from beak to tail, 38-40 cm in bust, and the beak is long and slightly curved. The eye rings of the adult pigeons are red or flesh red, and the eye rings of the young pigeons are pink. The neck is long and stout, the back is long and open, the tail is long and the end is pure round, the thighs are plump, the tarsal toes and toes are shorter, there are two kinds of foot hair and foot hair, the best without foot hair, and the foot color is dark red Huiqi.
-
Swallows and sparrows are two very common birds, one loved and the other criticized.
The swallow's back is smooth and black, as if it has just been bathed with shower gel, clean and neat, and the belly is a white oval, like a shield in the hand, a pair of scissor-like tails, they like to stand on telephone poles in groups, like a group of majestic warriors ready to rush to the battlefield, their task is to destroy all pests. The field is a battlefield, pests are food and enemies, they provide a strong guarantee for the steady growth of farmers' crops, so swallows are a kind of bird that people love, especially in the countryside.
The sparrows, thin and lively, numb and numb, chirping, noisy, walking and jumping, they wander around the fields, not to protect the crops but to steal rice and wheat, trample on the crops, sometimes sneak into the granary rice tank to eat a full meal, deeply disgusted by the people, this insatiable behavior also makes them enter the ranks of the four evils, become the enemy of the people, after the four evils eradication activities, their originally large populations are now becoming more and more difficult to find......
The swallows flew away, people created "Little Swallows" in the hope that they would come back next year, the sparrows were always there, and people hoped to remove all obstacles and be invincible ......
The call is different in nature, and the turtledove can't send a letter, the pigeon can! Hey, hey, hey.
Generally speaking, the word "account" can also be used for currency, but the word "account" must be used for textiles. Beg.
The core idea of VMI (Merchant Management [Wiki] Inventory) is that the retailer gives up control of the commodity inventory, and the merchant controls the commodity inventory movement on the [Wiki] chain, that is, the merchant centrally manages the inventory according to the daily commodity sales information and inventory provided by the retailer, and places orders or continuously for the retailer, so as to achieve rapid response to changes in customer demand. At present, it has slowly evolved into a powerful tool for downstream manufacturers to reduce inventory, and the means of managing the inventory belonging to the upstream ** supplier by itself or a third party is also called VMI joint inventory management (jointly >>>More
It is a customer relationship management system. The main meaning of CRM is to improve customer satisfaction through in-depth analysis of customer details, so as to improve the competitiveness of enterprises. >>>More
PMC is PLC, but Fanuc calls it very similar to PLC, because it is dedicated to machine tools, so it is called programmable machine controller. Compared with the traditional relay control circuit, the advantages of PMC are: fast time response, high control accuracy, good reliability, control program can be changed with different applications, and the interface and maintenance of the computer are convenient. >>>More