10) The largest bird
The largest bird is the ostrich, which lives in Africa. It is the heaviest, weighing upto 345 lb, and the weakest, reaching to 9 ft high. Its neck and its legs are the longest among birds. At a top speed of 40mph, it is the fastest two-legged land animal. The ostrich egg, which weighs three pounds, is also the world’s largest.
At only 2.24 inches long, and weighing just 0.056 ounces, the tiny bee hummingbird of Cuba is the smallest bird. Its wingspan is 2.5 inches. The nest is about the size of a thimble, and contains pea-sized eggs.
Whereas humans have a larynx containing vocal cords in their trachea to make sounds, birds have a syrinx. It is divided across both broncheal tubes. As a result, birds can make two sounds at once.
7) Sexual Dimorphism
Whereas the female is camouflaged to fit in with her environment, the man is usually brightly colored. It often has feathers that enthusiast or flare to produce a show. The female chooses a man based on its plumage and territory.
6) Birds do want to eat rocks
Humans and other mammals have a mouth with teeth to grind up food. Birds, on the other hand, have a gizzard. It’s a muscular organ that contracts to grind food up. Birds eat sand and other grit to help the gizzard grind up food.
5) Hollow bones
Birds that fly have hollow bones to minimize their own weight. There are struts across crucial places, and some bones are fused for extra stability. Penguins and ostriches, which do not fly, have strong bones.
4) Birds breathe in a four step procedure.
Humans breathe in a two step procedure. When a person 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 requires two breaths and four measures to breathe. It features not only the lungs, but the air sacs contained inside the birds abdomen.
3) Raptors use their feet to kill.
There are many birds that are predators, and many 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 time to process food as they consume it. They store it in their own crop, and digest it later, when they are hidden and it’s quiet. Wild turkeys have been found carrying up to one pound of food in their plants.
1) Birds are monogamous
Over 90 percent of birds are monogamous – either for the period or for life. 2 percent of birds practice polygyny, where one male mates with several females; and less than 1 percent of birds practice polyandry, where one female mates with many males.