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birds [2020/12/14 17:23] rapidplatypus [Flying backwards] |
birds [2021/06/29 04:09] aga |
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====== Birds ====== | ====== Birds ====== | ||
- | ===== Intelligence | + | ==== Intelligence ==== |
- | Members of the Corvid family, which includes ravens, crows, magpies and jays, are highly intelligent. They have complex social structures, can remember human faces, judge the fairness of a deal and will hold grudges against people that they feel have treated them unfairly. | + | Members of the Corvid family, which includes ravens, crows, magpies, and jays, are highly intelligent. They have complex social structures, can remember human faces, judge the fairness of a deal, and will hold grudges against people that they feel have treated them unfairly. |
- | ===== Upside down ===== | + | ==== Upside down ==== |
Flamingos can eat only when their head is upside down. [([[https:// | Flamingos can eat only when their head is upside down. [([[https:// | ||
- | ===== Flying backwards | + | ==== Flying backwards ==== |
Hummingbirds are the only known bird species that can fly backward, upside down, and hover in the air. This ability makes it possible for hummingbirds to sip nectar from flowers. | Hummingbirds are the only known bird species that can fly backward, upside down, and hover in the air. This ability makes it possible for hummingbirds to sip nectar from flowers. | ||
- | [([[https:// | + | [([[https:// |
+ | |||
+ | ==== Albatross ==== | ||
+ | These large birds, with a wingspan reaching 3.7 meters, are the most efficient travelers, can travel 10,000 miles in a single journey and circumnavigate the globe in 46 days. Albatrosses can live over 60 years and spend up to five years at sea without touching land. [([[https:// | ||
+ | |||
+ | ==== Ostrich ==== | ||
+ | The ostrich is the largest living bird in the world today. It is also the fastest running bird. The emu is the second-largest bird in the world alive today. [([[https:// | ||
+ | |||
+ | ==== Egg 1/4 of a body weight ==== | ||
+ | Some birds lay huge eggs. A female kiwi can lay an egg that weighs as much as 1/4 of her body weight. [([[https:// | ||
+ | |||
+ | ==== Largest eggs in the world ==== | ||
+ | The largest eggs in the world are ostrich eggs. They have a volume of several dozen chicken eggs. [([[http:// | ||
+ | |||
+ | ==== Fly over the Himalayas ==== | ||
+ | Indian geese can fly over the Himalayas at 10,000 meters above sea level, a remarkable feat. [([[https:// | ||
+ |