Bird > Reptile

Bird Fossils

2 monthes ago   |   By Ornithology

I have often mentioned that bird fossils are hard to come by, as compared to other vertebrates and hard-shelled invertebrates. It's mainly because they are lightweight and thin-skinned. The earliest birds or birdlike creatures were reptile-like and were heavier boned than later bird forms and they left a decent fossil record, but later versions, as they became lighter in weight and densely feathered, didn't form fossils as readily.
The typical bird today, being thin-skinned and light in weight, tends to decompose readily. A small bird falling to the ground in death will become...
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