How to tell the male and female of swallowfish? How can swallows tell the male from the female

Two or three centimeters of small swallowfish can't tell the male from the female. Fish can only distinguish male and female when they are sexually mature, have a flesh (fin removed size) of at least 4 cm, or are more than 10 months old.

Males have a more developed forehead than females, a full and high belly, a belly that is not as swollen as females, and males have vas deferens.

Thin and pointed, the female's spawning tube is thick and round. Swallow fish is a tropical fish that likes to match naturally, and after successful matching, they will break away from the group and swim and feed together in pairs, living an independent life that only envy mandarin ducks and not immortals.

This is a characteristic that needs to be paid attention to when choosing adult fish, and you should spend more time observing the fish to determine the complete pairing, and do not break them up. Enthusiasts who like to raise fish from the juvenile stage are best to buy 6 or 10 at the same time, even if there is an accident during their growth, a few die or a few are stunted.

1. You can observe the feathers on the belly of the swallow, the abdomen feathers of the male swallow are whiter, and the blue feathers on the back are more shiny, and the abdomen of the female swallow is not as white as the belly of the male swallow.

2. The male and female can be distinguished from the head shape of the swallow, the head of the male swallow is more bulging, and the head of the female swallow is smoother.

3. The male swallow is larger, and the female swallow is smaller.

4. Observe the tail feathers of the swallow, the tail feathers of the male swallow are longer and thinner, and the tail end is very pointed, and the tail feathers of the female swallow are short and thick, and the tail end is blunt.

5. The red spots on the heads of male swallows are very obvious and particularly bright, while the red spots on female swallows are very shallow.

Swallow is a member of the passerine order, a collective name for 74 species of birds in the family Swiftidae. Small size, narrow wing tips, concave tail and short beak, weak feet, not too many feathers, monochrome feathers or blue or green with metallic luster, swallows spend a lot of time catching pests in the air, one of the most flexible passerine species, mainly mosquitoes, flies and other insects as the staple food, is a beneficial bird, commonly found in tree holes or in urban and rural areas with mud glued to the walls of corridors, roofs, eaves and other walls to build nests.

Distinguish the fish scale swallow (also known as lark.

Male and female are distinguished mainly by the color of their bodies and the difference in their claws, and the specific characteristics are as follows.

1. Characteristics of male fish scale swallow.

1. Forehead. The most distinctive feature of the male ichthyoscale swallow is that its forehead is maroon-red, and its head and back of the neck also have the same color as the forehead.

2. Eyebrows. Its eyebrows are also very distinctive, with eyebrow lines growing all the way to the occipital region. The eyebrows and around the eye sockets are white and brownish.

3. Type of body stripes.

The back and waist of the male ichthyoscale swallow are mainly chestnut brown, the feathers on the outside of the wings are black-brown, and the tail edge is slightly whitish with the main color of chestnut brown. There are two symmetrical stripes of dark spots on the chest, which connect just above the chest. There are white feathers on the forehead and throat.

2. Characteristics of magnetic fish scale swallow.

1. There is less red hair than the male ichthyoscale swallow.

The female has almost the same body color as the male, but the female has less maroon red hair on her forehead and neck than the male, and the feathers on her body are close to a pale brown.

2. The body stripes and claws are different.

The two black spots on the chest of the magnetic scale swallow are not as pronounced as those of the male scale swallow. The color of the beak is earthy yellow, the toes of the feet are flesh pink, and its claws are different from those of ordinary birds, especially the hind paws, which are larger than the hind paws of ordinary birds, and they also extend straight to the back. The color of the claws is brown.

The plumage of females is close to that of males, but the top of the head and neck are less maroon-red, and the plumage is slightly closer to brownish-yellow; The upper body is pale, but almost light brown; The black streaks on the left and right sides of the upper chest are not obvious. The muzzle is earthy yellow, the toes are pink, and the claws are brown. The hind paws are longer than the hind paws of most birds and extend straight backwards.

Unlike ordinary animals, most birds cannot distinguish male and female from their appearance. The sex of some birds can be identified by their appearance, such as the eclectic parrot, where the male is green and the female is red.

DNA testing is a more accurate method that uses chromosomal differences to identify sex. And this method does not have any adverse effects on birds, and it has no effect on age.

Surgical testing is a risky method of using endoscopy to determine sex from abdominal incision. This method is not suitable for young birds and requires 3Stool testing uses hormones from fresh stool to determine sex, which is a safer method, but its accuracy can vary depending on many external factors, such as transportation and sampling.

Look at the hair on the head is often erected is a male adult bird to listen to the call, the coat color is dark, the eyes are big, the eyebrows are thick and long, the pattern on the chest is connected into a strip for the male bird, and there are many spots and broken dots.

1. The fast red spot in front of the male swallow's head is obvious and particularly vivid; And the mother swallow is very shallow.

2. The male swallow drum head is larger; The head of the female swallow is smoother and the individual is smaller.

3. The male swallow is larger and has a bright color; The color of the female swallow is a little duller.

Swallow is a member of the passerine order, a collective name for 74 species of birds in the family Swiftidae. The shape is small, the wing tips are narrow, the tail is concave and the beak is short, the feet are weak and small, and the feathers are not too much. The feather coat is monochromatic, or has a metallic blue or green sheen; Most species are similar to both sexes.

Swallows spend a lot of time catching pests in the air and are one of the most flexible passerine species, mainly feeding on mosquitoes, flies and other insects, and are well-known beneficial birds. Nesting in tree cavities or crevices, or drilling holes on sandy banks, or sticking mud on walls or protrusions in corridors, roofs, eaves, etc. in urban and rural areas for nesting rights. 37 eggs per lay.

The red spot in front of the male swallow's head is obvious and particularly bright, while the female swallow is very light, the male swallow is larger, the color is very conspicuous, and the black is a little blue.