What key characteristics define *Xema sabini*'s placement within Class Aves?
Answer
Being feathered, warm-blooded vertebrates that lay hard-shelled eggs.
The classification into Class Aves specifically groups *Xema sabini* with all birds. The defining traits inherent to this class include being vertebrates that maintain a constant, warm-blooded internal temperature (endothermic), possessing specialized integumentary structures known as feathers, and reproducing by laying hard-shelled eggs. These features distinguish Aves from other vertebrate classes like Mammalia or Reptilia, placing the gull firmly among the feathered animals.

#Videos
Xeme Facts: Sabine's Gull (Xema) 𓅰 Animal Fact Files - YouTube
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