Birds are a group of warm-blooded vertebrates. They are characterized by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart and a strong lightweight skeleton. There are about ten thousand living species. Their offspring are hatched from eggs. They have wings whose development varies according to species. Their bodies are varying in color. The digestive and respiratory systems of birds are uniquely adapted for flight. Some bird species of aquatic environments have further evolved for swimming.
Below are some interesting facts about birds.
Description and Physical Characteristics of Birds
107 Amazing Bird Facts to Make You Sing
15 Amazing Facts About 15 Birds
Mating and reproduction
The bird species are both monogamous and polygamous. Bird mating behavior varies widely with species. All bird offspring are hatched from hard-shelled eggs.
Reference the link below to find out about the differences in mating and reproduction.
How Do Birds Mate - Courtship and Sex in Birds
Bird Reproduction - Avian Report
Development and Parental care
When birds are born, there are two types altricial and precocial. Parenting in birds is unique for the species. Reference the links below to find out about the differences.
Know When to Help or Leave a Baby Bird Alone - Avian Report
Precocial vs Altricial Development – Maine Birds
Precocial Birds or Altricial Birds? What's the Difference?
Question 1: Explain bird reproduction.
Question 2: What do birds consider part of their normal diet?
Question 3: Describe parental care of offspring in birds.
Question 4: Distinguish between altricial and precocial birds. Give three examples of precocial birds.
Question 5: Describe how a bird’s body makeup enables it to fly.
Question 6: Describe what bird migration is.
Question 7: What is the relationship between birds and humans?