Interesting post. Regarding your second link, the argument is that wildlife; animals, fish, birds, and cattle ..etc. was heavily represented in Ancient Egypt. But there is a particular display in the Egyptian museum that is very similar to a plane. It is the tail of this object that is controversial and makes it more than just a bird.

It’s commonly called the "Sakkara’s bird”. Dates back to 200 BC, but was only excavated in the 19th century.

It is displayed in the upper floor of Egyptian Museum. I can barely recall seeing it from my last visit to the museum, as I was exhausted with all the beauty and details.

I get fixated on King Tut's room!

Salam