Chicken: 3-5 days |
| Schematic drawing cross-section through the egg after 3 and 5 days |
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Upperview: cross-section after 3 and 5 days; here right view: longitudinal section after 3 days.
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| Chick embryo after 4 days incubation, according to Patten, 1920 |
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| 4 days after incubation.Modifications after drawings in Patten, B.M. (1920). The Early Embryology of the Chick. Philadelphia: P. Blakiston's Son and Co. | |
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