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Bird nest, Phạm Võ Anh Thi - 47.01.607.105 - Coggle Diagram

- - - - Swiftlets also often choose places where other swiftlets have nested, because that is often a sign of safety.
      - Usually, the choice is caves, cliffs, open air with suitable natural conditions.
      - Swiftlet birds often choose places with light intensity of about 2 lumens/m2 to avoid predators such as owls and bats.
    - - At this time, the bird's salivary glands develop, the bird's jaw muscles will force the saliva out and the bird uses its tongue to bring saliva to the edge of the nest to make a bird's nest.
      - Initially, the bird's nest looks like a loofah, but gradually the fibers become tightly linked. The time the bird's nest is completed is also the time the bird is about to lay eggs.
      - During the breeding season, during the day the bird will fly out to search for food and at night the bird will build a nest
      - After many nights of diligently building the nest, the nest is gradually formed, on average each night the bird builds 1 mm of nest.
      - After the bird's nest is large enough, the bird will then wipe its saliva around the inside of the nest to make a place to lay the eggs.
      - The sign to know that the bird's nest is about to lay eggs is that there are layers of loofah inside the bird's nest.
  - - - Normally, these bird's nest houses are often built near the sea and must be safe so that the birds can come and live and nest.
      - First, the domestic bird will be lured to its nesting place in the bird's nest by sounds
      - House bird's nests are often curved like a bow, while island bird's nests are often larger and shaped like a cup.
    - - Then, at night they will return to the bird's nest and begin to nest on the wall of the house. This will be a permanent nesting place for the bird's entire life if it is safe and there is no change from time to time. human.
      - When the bird's nest is completed, it is also the time when the bird's nest prepares to give birth. During this process, the bird's nest can continue to build the nest with a thickness of 1 - 2mm.
      - During the day, swiftlets will fly out to sea to search for food like regular island swiftlets
      - The first time a bird nests, it may take up to 4 months to complete the nest, while the next time it only takes 1 month for the bird to complete the nest.