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NEXT ROOST NEXT PAGE UP CATEGORY PREVIOUS PAGE PREVIOUS ROOST Carl's Roost:
Day 11 Observations
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(Notes by Carl. Joanne is still cleaning up after the tornado).

The 11-day chick is moving even more. We cannot get very clear pictures, because it won't hold still long enough! We can see the "motion artifacts" in some images. We also see that if we repeat the same slice over and over, it looks different each time. Finally, we see lots of bright spots, especially in the amnion, caused by "sloshing" of the fluid as the chick moves.

Frame 143 We got lucky and found the chick holding still a few times. We can see that he has grown a lot! Frame 143 is the best. You can even see two parts of the brain (forebrain and hindbrain). The body is smaller, and not as easy to see as the head with its huge eyes.

The upper albumen layer has shrunk considerably. The allantois with its shell membranes and blood vessels can be seen in many places. The chick's aorta (main blood vessel) is also visible in many frames.

Frame 128 Frame 133


C.D.Gregory: April 26, 1996



- Page 11 of 17 -



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