In Aves, the endoskeleton is fully ossified (bony), and long bones are hollow with air cavities (pneumatic).
In Aves, the endoskeleton is fully ossified (bony), and long bones are hollow with air cavities (pneumatic).
| Text | Endoskeleton is fully ossified (bony) in aves and the long bones are hollow with air cavities (pneumatic). |
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