How long does it take to hatch a black bird egg?   10-19 days i think!!!!!!! and then a further 10-19 days before the chick becomes a fledgling.he length of time it takes baby birds to hatch varies widely from species to species. Some emerge from the egg immediately, while others can take hours.
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Proponents theorize that memes are a viral phenomenon that may evolve by natural selection in a manner analogous to that of biological evolution. Memes do this through the processes of variation, mutation, competition, and inheritance, each of which influences a meme's reproductive success.awkins likened the process by which memes survive and change through the evolution of culture to the natural selection of genes in biological evolution. Dawkins defined the meme as a unit of cultural transmission, or a unit of imitation and replication, but later definitions would vary.