Weird facts about birds.

Bird, a wonderful creature of this nature has many weird facts associated with it. The world of birdsis truly fascinating. From their colorful feathers to peculiar activities, birds enchant a lot of people. You will be amazed to know that, there is a special branch of science, known as ornithology that deals with the study of birds. There are at least 10000 identified bird species in the world. They possess special characteristics like recognizing humans, showing love, taking revenge, and so on. Here we have compiled some weird facts about different bird species. Go through to know more. Ostriches possess the biggest eyes of any known land animal. There are many land animals. But can you imagine that a bird has the largest eyes amongst them? Yes, it is true. Among the land animals, the eyes of the Ostrich are the largest. Well, in this topic, we are not considering aquatic animals. So, how big is the eye of an ostrich? It is nearly a billiard ball size. Even, the brain of the ostrich is smaller than the eyes. Surprising, right? Some duck species keep one eye open during sleep. Some ducks take naps in groups. So, the ducks lying on the perimeter need to guard the others. To do this, they always keep one eye open.  Other ducks often sleep deeply. However, those ducks on the outside try to keep their brain active so that no predator can attack. Truly, they are really smart. In ancient times, pigeons were used to deliver the results of the famous Olympic Games in Greece. Pigeons are considered to be the first domesticated bird species. They have been used to deliver important messages over a long distance. They were even used to deliver secret military information. In earlier times of the Olympic games, when there was no system for transmitting live updates, pigeons were used to serve this purpose. In many regions, pigeons delivered messages during the Second World war too. Most bird species do not possess the urinary bladder: In humans, the urinary bladder is used to store urine. However, birds need to fly a lot in the sky. So, they need to reduce weight. Lightweight birds efficiently fly. If the urine is stored in the urinary bladder, then the overall body weight will increase. To mitigate the issues, many birds do not have a urinary bladder. This is an evolutionarily conserved phenomenon in bird species. Birds with maximum and minimum feather content: Having feathers is a unique characteristic of bird species. It helps in many functions like flying, keeping the body heat, resisting cold weather, and so on. The whistling swan has the maximum number of feathers. They possess nearly 25000 feathers. On the other hand, the smallest bird species, Hummingbirds possess the least amount of feathers. The feather content is only around 1000. Poisonous Bird species: You will be shocked to know that, there is only one bird that possesses poison. It is the Pitohui bird observed in Papua, New Guinea. They contain poison in the skin and feathers. It is considered a defense mechanism for them. Talkative bird species: As human beings, birds can also be talkative. African Grey Parrot is considered the most talkative bird. They can learn and speak 800 words, whereas other varieties of parrots can speak only 50 words. Aren't those facts about birds really interesting and weird?