Before obtaining the Purple Hunter Card, Yue Feng had no concept of raptors whatsoever; his only basic understanding came from seeing a bald-tailed eagle in a big iron cage at the zoo as a kid!
However, the Hunter Card comes with the Skill of Ancient Eagle Training, and the additional knowledge has expanded Yue Feng's reservoir of knowledge.
The falcon is not an ordinary thing; in ancient times, it was a rare bird used exclusively by the Royal family. The Qing Dynasty Emperor Kangxi once wrote a poem: "Of the 360 winged creatures, the Sea Dong Qing is the most divine and noble. Its nature embodies the essence of metal and the virtue of fire, a rare talent worthy of the Yao Star's shine."
The Sea Dong Qing in the poem refers to the falcon.
Reading the poem might not provide a clear concept; to put it in plain terms, this raptor is extremely rare and precious. It was very difficult even for the ancient Emperors to own one.