A group of three birds whose every member can see distinctly an object four times as far as human beings can see from a distance of 2 meters) is

A group of three birds whose every member can see distinctly an object four times as far as human beings can see from a distance of 2 meters) is Correct Answer <span style="">Eagles, Kites, Vultures</span>

Concept:

  • Different birds have different types of vision.
  • The type of vision they have depends on their source of food.

Explanation:

Monocular vision:

  • Birds with eyes on the sides of their heads have a wide visual field.
  • It is useful for detecting prey.
  • Such birds can focus on two different things at a time.
  • When they look straight ahead, both their eyes focus on the same object.
  • They don't have to move their heads to see around.
  • They can see four times as far as we can.
  • Example: Kites, Eagles, Vultures.

Binocular vision:

  • While those with eyes on the front of their heads have binocular vision.
  • Such birds can estimate distances when hunting.
  • They have to move their heads to see around. 
  • The binocular vision of birds makes them see distinctly.
  • Example: Owl, Crows, Doves, Peacock, Nightingales, Parrots, Pigeons etc.

Thus, Kites, Eagles and Vultures can see four times as far as we can see.

Related Questions

Select from the following a group of birds each member of which is able to see distinctly the object four times as far as we can see.