Aves, The melodious birds.

How are you doing these days? Guys! Today we are going to talk about the general characters of class Aves that include all kinds of birds whether they are flying or flightless birds.
So, here we go,

As you know that birds have feathers on their bodies instead of scales which help them maintain their body temperature and flight that is why they are warm blooded and we can say that having feathers is their distinguishing character. They have light and hollow bones with strong pectoral muscles. They have 4 chambered heart with double circuit circulation. Their respiratory system is highly developed with air sacs between the organs, they also have highly developed hearing and vision. Like fish, they have streamlined body, To support easy and flawless flight they lack urinary and gall bladders and females also have one ovary except eagle. obviously they are oviparous and uricotelic. They have internal fertilization and external development. They also have high blood pressure and metabolic rate. During the evolutionary process, some species have lost the ability to fly by modifying their characters, like, Hen, duck, kiwi and ostrich.That is all we had to share about today i hope you all there enjoyed the topic.