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? say: It was laid by the last non-chicken ancestor of the chicken. All the way back to the first protolife that arose on earth.
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Lou C. Ferr say: Who said it was? ; ' )
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Chris P say: Because the first chicken came from an egg that was laid by a bird that wasn't a chicken.
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Lacy555 say: Maybe what science and religion says about the start of life on this planet is incorrect. I'm sure that we'll learn but it'll take time.
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conrad say: Birds are closely related to reptiles
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Lighting the Way to Reality say: If the egg comes from a chicken, how could the egg be first?
The answer to the question of which came first, the chicken or the egg, is quite easy to understand from an evolutionary standpoint.
All animals produce eggs, including humans (female that is). So your question isn't applicable to just chickens.
The production of eggs as a means of reproduction was around a lot longer than chickens were. The first eggs were produced by early, simple animals several hundred million years ago. As the simple animals evolved into more complex forms over time, the production of eggs continued to be a part of the process of reproduction.
There are a great many fossils of small dinosaurs with feather impressions showing a wide variety of forms. The feathers would initially have been used for insulation, for there is evidence that the dinosaurs were at least meso-thermal instead of being cold blooded.
Subsequently, some lines of small feathered dinosaurs evolved into gliders and then flyers.
Here is a fossil of one such. Its skeleton is more like that of a small theropod dinosaur than of a bird. It has teeth, a long, boned tail, and separate fingers instead of fused fingers as in modern birds.
https://australianmuseum.net.au/uploads/...