Originally Posted by jaguartx
Still waiting for someone to explain how the first bird that was born as a DNA defect

Your meaning, here is unclear, but if I understand it correctly, it is a mistake to describe a mutation as “a DNA defect”. Having taken a genetics class you should know that not all mutations are negative. Some have a positive effect (with respect to reproductive success) and the majority have no effect at all. Are you not aware that every human zygote has, on average, 129 mutations?

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and of one sex happened to be across the pond of another with the same DNA defect changing making it a bird but of the opposite sex so they could propagate.

It is not necessary that a mutation be present in both parents. A mutation can be passed to from one parent to the offspring. If the mutation is beneficial or neutral it could spread through the population over generations.

This has been explained but apparently you missed it. The definition of evolution, repeated below in hope that you will read it this time, makes it clear if you bother to understand it.

Evolution: Unless otherwise specified, the scientific context always refers to an explanation of biodiversity via population mechanics; summarily defined as ‘descent with inherent [genetic] modification’: Paraphrased for clarity, it is a process of varying allele frequencies among reproductive populations; leading to (usually subtle) changes in the morphological or physiological composition of descendant subsets. When compiled over successive generations, these can expand biodiversity when continuing variation between genetically-isolated groups eventually lead to one or more descendant branches increasingly distinct from their ancestors or cousins.

Evolution is a gradual process. The average characteristics of a population change over generations. Two birds cannot produce offspring that are not of their species. Every bird is a slightly modified version of its parents.

The concept you seem to be missing is gradual change in populations over generations.

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At what point does the blue population become the red population?

One unerring mark of the love of the truth is not entertaining any proposition with greater assurance than the proofs it is built upon will warrant. John Locke, 1690