Bird Egg - Shell

Shell

Bird eggshells are diverse. For example:

  • cormorant eggs are rough and chalky
  • tinamou eggs are shiny
  • duck eggs are oily and waterproof
  • cassowary eggs are heavily pitted

Tiny pores in a bird eggshell allow the embryo to breathe. The domestic hen's egg has around 7500 pores.

Read more about this topic:  Bird Egg

Famous quotes containing the word shell:

    “If there was one egg in it there were nine,
    Torpedo-like, with shell of gritty leather,
    All packed in sand to wait the trump together.”
    —Robert Frost (1874–1963)

    “I do not know what I may appear to the world; but to myself I seem to have been only like a boy playing on the seashore, and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, whilst the great ocean of truth lay all undiscovered before me.”
    —Isaac Newton (1642–1727)