When you incubate eggs do they have to be fertile??

Discussion in 'Incubating & Hatching Eggs' started by 12chickenlover3, Feb 3, 2013.

  1. 12chickenlover3

    12chickenlover3 Chirping

    Jan 27, 2013
    I never incubated eggs before, do they have to be fertile in order to hatch? And if so how do you tell if they are fertile?


  2. Jarrett Dobbins

    Jarrett Dobbins In the Brooder

    Jan 25, 2013
    North Carolina
    Yes, they must be fertile in order to hatch. You cannot tell whether or not an egg is fertile just by looking at it, however, after about 5-8 days in the incubator you can tell if the egg is fertile or not by candling the egg. If you have an older rooster in the flock, the chances of you having fertile eggs are pretty high
  3. Sally Sunshine

    Sally Sunshine Cattywampus Angel <straightens Halo> Premium Member Project Manager

    Aug 23, 2012
    My Coop
    Your welcome to my notes and here is a paste from them! Hatching Eggs 101

    Is it Fertile or Infertile?

    To check the fertility, simply break an egg in a bowl. Find the white spot on the yolk. If you do not, use a spoon to gently flip the yolk over until you find it.
    If the egg is fertile, the white mark will be nearly perfectly round and in the center it will be yellow;
    it will resemble a donut. If it is infertile, the white mark will not be very round, and in most cases, smaller than that of the fertile mark. If the egg is not fertile, the 'white mark' is called a "blastodisc". If the egg is fertile, the 'white mark' it is called a "blastoderm", and this means that cell division, because of fertilization, occurred.
    A link with more pics of fertile vs Non Eggs! https://www.backyardchickens.com/t/16008/how-to-tell-a-fertile-vs-infertile-egg-pictures
    1 person likes this.

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