Is bird a mammal?
Birds are not mammals. Mammals are viviparous and can breast-feed their young by secreting milk from the mammary glands, such as pigs, cattle, sheep and so on. Birds are egg-laying animals, mainly laying eggs, and then hatch into young birds.
When do birds lay eggs?
Birds usually lay eggs in spring or summer, then hatch into young birds, and rarely lay eggs in winter. Because the weather is warm and there is plenty of food in spring and summer. Among them, the African ostrich is the largest bird in the world. The egg laid is like a duck egg in color. It is 15-20 cm in diameter and weighs 1400 grams. It is the largest of all bird eggs. The egg shell is so hard that it can bear the weight of a person.
How long will it take for the eggs to hatch?
Different species of birds have different incubation times. If it is a parrot, the incubation period is 28 days, 28 days for ducks, 27 days for storks, 21 days for chickens, such as pigeons, and the incubation period is about 16 days.
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Is the hundred-flower fish a sea fish?
The hundred flower fish is not a marine fish, but a freshwater fish. At present, it is mainly distributed along the coast of China, more in the South China Sea and East China Sea, and a small amount in the Yellow Sea and Bohai Sea. Hundred flower fish live mainly in the middle and lower layers of the coastal waters, feeding on small fish and diatoms. The nutritional value of hundred-flower fish is high and easy.
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Is bee a beneficial insect or a pest?
Honeybees are insects with a body length of 8-20 mm, a yellowish brown or dark brown color and dense hair that usually flies from flower to flower. So, are bees beneficial insects or pests? Now I would like to introduce to you. I. are bees beneficial insects or pests?
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