How does 雅's 2021 meanings appertain to 隹? I don't understand how 隹 relates to definitions A-C below.
Definition A.1. Are short-tailed birds standard in China? I'm no ornithologist.
Definition A.2. Again, I don't deal with birds. I'm indifferent to them.  Short-tailed birds don't look elegant to me. Did the Chinese think they are elegant?
Definition C. Are short-tailed birds unusual in China?

Above is Yellowbridge. Below is Oxford Chinese Dictionary (2010) p 857.
雅 and 鸦 are most likely the same in olden times with 雅 being the variant form for 鸦 meaning crow. It's current meanings are probably borrowed when 鸦 became the standard character for crow, and all the current meanings for 雅 no longer have anything to do with birds.
https://www.zdic.net/hans/%E9%9B%85