Types de plumes Larousse pour tous 1907–1910

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In the "Larousse pour tous" encyclopedias from 1907–1910, an entry on "Types de plumes" (Types of Feathers) would likely describe the different kinds of feathers found on birds, including their structure, function, and significance.

In the "Larousse pour tous" encyclopedias from 1907–1910, an entry on "Types de plumes" (Types of Feathers) would likely describe the different kinds of feathers found on birds, including their structure, function, and significance.

Here’s what you might expect in such an entry:

1. Contour Feathers (Plumes de contour)

  • Description: These are the outermost feathers that define the bird's shape. They include the flight feathers (remiges) on the wings and tail feathers (rectrices).
  • Function: Provides insulation, waterproofing, and aids in flight.

2. Down Feathers (Duvet)

  • Description: Soft and fluffy feathers found beneath the contour feathers.
  • Function: Primarily for insulation, helping to keep the bird warm by trapping air close to the body.

3. Semiplumes (Plumes semi-duvet)

  • Description: Feathers that are intermediate in structure between contour feathers and down feathers.
  • Function: Provide insulation and help in smooth contouring of the bird's body.

4. Filoplumes

  • Description: Hair-like feathers that are usually found near the base of contour feathers.
  • Function: Act as sensory structures, helping birds detect changes in the position of their feathers.

5. Bristles (Soies)

  • Description: Stiff, hair-like feathers, usually found around the beak, eyes, or face.
  • Function: Serve as sensory organs, often protecting the bird's face from dust and insects.

6. Powder Down Feathers (Poudreux)

  • Description: Special feathers that disintegrate into a fine powder.
  • Function: The powder helps to keep other feathers clean and dry.

Illustrations:

  • The entry might include detailed illustrations showing the structure of each type of feather, highlighting differences in texture, size, and placement on the bird's body.

This type of entry would have been designed to educate readers about avian biology, using clear text and visual aids typical of the "Larousse pour tous" series.

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