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Public Domain Photos: Chick Development in the Egg
The following photos are from the Bureau of Animal Industry, United States Department of Agriculture, as printed in “Our Domestic Birds: Elementary Lessons in Aviculture” by J H Robinson (1913). Click to enlarge:
Fresh Egg.
Infertile egg after 24 hours’ incubation.
Fertile egg after 24 hours’ incubation.
Fertile egg after 72 hours’ incubation.
Fertile egg after 7 days incubation.
Chick in egg, just before hatching.
Chick hatching from egg.
Chick, 1 day old.
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