What do you know about birds ?

Birds are feathered, winged, bipedal [ moves by means of its two rear limbs, or legs], endothermic (warm-blooded), egg-laying, vertebrate animals. Birds range in size from the 5 cm (2 in) Bee Hummingbird to the 2.75 m (9 ft) Ostrich.
Birds are characterised by feathers, a beak with no teeth, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a lightweight but strong skeleton.Many species undertake long distance annual migrations, and many more perform shorter irregular movements. Birds are social; they communicate using visual signals and through calls and songs, and participate in social behaviours, including cooperative breeding and hunting, flocking, and mobbing of predators.



Eggs are usually laid in a nest and incubated by the parents. Most birds have an extended period of parental care after hatching.
That was a simple note about birds ,and that is the original picture.that we will manipulate to chage it.

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