See their characteristics

There are so many small birds in this world, from religious colors and characteristics to them. Experts say that birds or birds are members of vertebrate animals that have feathers and wings.

The oldest fossil bird found in Germany and known as Archeopteryx.

Meanwhile, the types of birds are so varied, ranging from petite hummingbirds to ostriches, which are taller than people. In this world there are an estimated 8,800 to 10,200 species of birds or around 1,500 species of which are found in Indonesia. These various bird species are scientifically classified into Aves classes or animals classified into winged animals. Then most birds have to eat food at least half of their body weight every day so he will survive in this world. (Book, Aves: 2000) So many small birds are found in this world and there are thousands of species, but in this post several small birds that we often meet and they are found around us. The following is the explanation: ### **1. Bird Sparrows** Surely you are very familiar with that one bird because they are often found around our environment. Sparrows are a common name for a group of small, grain-eating birds that spread in the tropical regions of the world. These birds are now included in the Estrildidae tribe, although some consider this group to be tribal children (Estrildinae), part of the wider Passeridae tribe. Previously, this group of birds was placed in the manyar-manyaran tribe, Ploceidae. These birds are spread throughout the world and he is also called a sparrow. 

The types of sparrows (including bondol and gelatik) like to be in groups, and are often seen moving and looking for food in a fairly large group. These birds have similar stature and habits, but the colors of their feathers are quite varied. The smallest size is owned by Nesocharis shelleyi whose body length is about 8.3 cm (3.3 inches), although the lightest weight is Estrilda troglodytes (6 g). Whereas the largest is Javanese gelatin (Padda oryzivora), whose body length is 17 cm (6.7 inches) and weighs 25 g.

In general, based on the opinion of experts, most sparrows are not resistant to cold climates and need warm habitats such as in the tropics and also like Indonesia. But there are also a small number of species that adapt to cold environments in southern Australia. While the characteristics of sparrows lay eggs 4-10 grains, white, which are stored in the nest in the form of grass balls similar to "Reungkam" where to store something. ### **2. Swallow** This one bird often goes back and forth when late in the afternoon they are often found on electric wires or on a wire rope of someone's fence. If we trace the characteristics it turns out that the size of an adult bird is small in size, about 14 cm long. The wing length exceeds the tail, so that when closing both wings cross each other under the tail. The color of the feather consists of a combination of dark yellow, red and blue. The upper body is brownish in color and there is also a steel blue, brown chestnut forehead with straight lines.

As for the difference with the kite flying birds, the lower part of the feather is dirty white, the tail is less elongated and without a long ribbon, without the blue line on the chest, the size is slightly smaller, and looks less attractive. The color of the iris is brown, the beak is hiram, and the legs are brown.

 Whereas the difference with the Kite bird is that the lower part of the feather is dirty white, the tail is less elongated and without a long ribbon, without the blue line on the chest, the size is slightly smaller, and looks less attractive. The color of the iris is brown, the beak is hiram, and the legs are brown. (book, Aves: 2000) Then they often live in small groups that are separated. Often inhabit around residential settlements and agricultural land, often seen in open areas. The main food of this bird is insects, such as Centadu, grasshoppers, and other types of insects. They feed themselves in circles or float low on water without groups like seagulls. When winter comes they often gather with swiftlets, but do not gather in large groups to sleep, but they mingle when going to other things when other swallows gather.  This bird is very different from other swallow birds, which can spend all day to fly and perch at night, while many birds perch in the places mentioned above. swallowing stones often looks perched to rest. During the day, it is often seen flying on water. This bird's nest is a cup made from basic material from mud on a hard surface or attached to the ceiling of a building or hanging on rocks such as a cliff and the walls of a house. Sarang has an entrance in the form of an open hole at the top where they make a nest. The unique thing that is found in it is the sound that is issued like a squeak and the sound of a high-pitched alarm or we hear the tone "twit" loud in the air. Sometimes their voices are often heard in the middle of the night when people are sleeping. In Indonesia, the sound of "tweets" is a warning tone for humans that they say something will happen. But in the habit that happens is someone's death. This tone signals humans that tomorrow someone will die. Or maybe in other areas this voice was heard and the possibility of saying he was separated from his group.