Author Question: The ____ or preen gland in birds, which is lateral to the tail feather attachment, secretes oil that ... (Read 55 times)

penguins

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The ____ or preen gland in birds, which is lateral to the tail feather attachment, secretes oil that is used to waterproof feathers.
 A) tertiary
  B) remige
  C) uropygial
  D) pteryla

Question 2

In birds, the areas or tracts of skin that lack feathers or down are called:
 A) barbules
  B) orbitals
  C) rachis
  D) apteria



aloop

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Answer to Question 1

C

Answer to Question 2

D



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