W O W
I hadn't read this thread until just now, as the title in itself just seemed too ridiculous. So, now I've read it, and I couldn't even have begun to guess how ridiculous the thread would be!!
There are so many flaws in the arguments put forward by morninglight, I'm not sure I know where to start.
For one thing, you state as FACT that a parrots face looks like clay. But I state as (equally acceptable) FACT that is does not - not even slightly. Your repeat this error in many of your comparisons - a pheasant looks like grains? No, it does not - not even slightly. A Muscovy duck's skin patch looks like a frog...? What?! For one thing, the skin patch differs greatly on muscovy ducks, for another thing, the example you show does not look like a frog - not even slightly.
Secondly, you relate many of these "similarities" to foods that the bird in question does not eat, but provide no explanation as to why this is relevant to your argument.
Thirdly, you are making these connections through a human's perception of similarity, but each animal's perception has been shown to be very different to our own. (My cat, for example, possibly thinks my car is another animal because it has two headlights which look like eyes).
Fourthly, you mention several times that you have no need to prove your theory - that it is for someone else to do this - but then you continually return to this thread to argue your case. This suggests that you are trying to prove something, but unfortunately, the arguments you make are entirely unscientific and the links you suggest are - at best - tentative. If you want us to accept this as a scientific theory (even an unproven one), then you need to put your ideas over in a scientifically rigorous way.
Fifthly, you impose a human emotion or perception ("Beauty") on birds (and animals) whereas there is no evidence that any animal other than humans has any such perception. Psychologically, beauty is very complex and is entirely subjective (mostly developed through nurture rather than nature), and is almost certainly accounted for by the human brain's complexity, so is unlikley to be a characterstic of animal psychology. You don't see a sheep wistfully staring at an aesthetically pleasing landscape, for example, even one full of grass.
Should I go on?