“Like the appearance of a rainbow in a cloud on a rainy day, so was the appearance of the brightness all around it. This was the appearance of the likeness of the glory of the LORD. So when I saw it, I fell on my face, and I heard a voice of One speaking.
(Ezekiel 1:28 NKJV)
Avian and Attributes – Rainbow
RA’INBOW, n. A bow, or an arch of a circle, consisting of all the colors formed by the refraction and reflection of rays of light from drops of rain or vapor, appearing in the part of the hemisphere opposite to the sun. When the sun is at the horizon, the rainbow is a semicircle. The rainbow is called also iris.
The moon sometimes forms a bow or arch of light, more faint than that formed by the sun, and called lunar rainbow. Similar bows at sea are called marine rainbows or sea bows.
[Definitions from Webster’s Dictionary of American English (1828), unless noted. Bird info from Wikipedia plus.]