Birds form one of six basic animal groups, with the others being amphibians, fish, invertebrates, mammals and reptiles. They are endothermic vertebrates, characterized by feathers, toothless beaked jaws, a high metabolic rate, a four-chambered heart, and a lightweight but strong skeleton. They reproduce by laying of hard-shelled eggs (eggs fertilize inside the female). The fossil record indicates that birds are the last surviving group of dinosaurs. So, they are also termed avian dinosaurs.
Birds (Aves) range in size and weight from the 5 cm (2 in) and 1.6-2 grams bee hummingbird to the 2.75 m (9 ft) and 104-156 kg (229-344 lbs) ostrich. Here are the top 15 largest (by body weight) living bird species.
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There are a lot of natural and human-made wonders in the world. But everything has an end, and sooner or later, they’ll be gone. Unfortunately, some of them will be vanished sooner, even in a few decades. Here are eight of them, just in case you may want to see before they are gone.
Continue reading 8 Famous Places to See Before They Are Vanished
We sometimes forget how amazing and interesting place is where we live in. Here are the amazing facts about our planet, Earth. Some of them even may sound fake but in fact they are totally true.
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The Earth, our home has a lot of beautiful, amazing locations – and some strange places as well. These weird places sometimes look “impossible”, sometimes dangerous, sometimes scary, but despite all that, still can be beautiful. Here are ten of them.
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There are total of 1031 UNESCO World Heritage Sites in the world (as of June 2016 – 802 Cultural, 197 Natural and 32 Mixed). Here are the top 20 countries having most number of UNESCO World Heritage sites.
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Here is the second post of the 10 Lesser Known Natural Wonders series. A few more amazing places on Earth, some of them even look extraterrestrial.
Continue reading 10 Lesser Known Natural Wonders (II)