The largest bird is the ostrich, which lives in Africa. It’s the heaviest, weighing upto 345 lb, and the tallest, reaching to 9 feet high. Its neck and its legs are the longest among birds. In a top speed of 40mph, it’s the fastest two-legged land creature. The ostrich egg, which weighs three pounds, is also the world’s biggest.
At only 2.24 inches long, and weighing just 0.056 oz, the tiny bee hummingbird of Cuba is the smallest bird. The nest is about the size of a thimble, and comprises pea-sized eggs.
Whereas humans have a larynx containing vocal cords in their trachea to create sounds, birds have a syrinx. It is divided across both broncheal tubes. Because of this, birds can make two sounds at once.
7) Sexual Dimorphism
Whereas the female is camouflaged to match in with her surroundings, the man is usually brightly colored. It frequently has feathers that enthusiast or flare to make a show. The female chooses a male based on its plumage and land.
6) Birds do need to eat rocks
Humans and other mammals have a mouth with teeth to grind food up. It is a muscular organ that contracts to grind food up. Birds eat sand and other grit to assist the gizzard grind food up.
5) Hollow bones
Birds that fly have hollow bones to minimize their weight. There are struts across crucial places, and some bones are fused for added stability. Penguins and ostriches, which don’t fly, have strong bones.
4) Birds breathe in a four step procedure.
Humans breathe in a two step procedure. When someone breathes in, oxygen enters the lungs. When someone breathes out, carbon dioxide is expelled from the lungs. This is an in-out system. With birds, airflow is continuous. It takes two breaths and four steps to breathe. It includes not only the lungs, but the air sacs contained inside the birds abdomen.
3) Raptors use their feet to kill.
There are many birds who are predators, and most use their bills as a deadly weapon. Blue heron and egrets spear fish with their bills. Raptors, on the other hand, have feet with sharp talons. They use these to attack and kill prey, and then to take away the prey.
2) Birds have built-in food storage
Birds don’t have enough time to process food as they consume it. They store it in their harvest, and digest it later, when they’re hidden and it is quiet. Wild turkeys have been found carrying up to a pound of food in their plants.
1) Birds are monogamous
Over 90 percent of birds are monogamous – either for the season or for life. Two percent of birds practice polygyny, where one male mates with several females; and less than one percent of birds practice polyandry, where one female mates with many males.