from The Century Dictionary and Cyclopedia
- n. A little or petty king; a royalet.
- n. In ornithology, a kinglet or goldcrest; a small bird of the genus Regulus.
Sorry, no etymologies found.
I have seen this linked all over and I thank roitelet for sharing it with me.
 The Germans still call it _Zaunkönig_ and the French _roitelet_, both names thus containing the idea of _king_.
It is this little bird which is alluded to in Lafontaine's charming fable of the Oak and the Reed; this is the tiny roitelet which the Oak pronounces a heavy burden for the Reed:
Among the birds enumerated by Kuhn and others as representing the storm-cloud are likewise the wren or "kinglet" (French roitelet); the owl, sacred to Athene; the cuckoo, stork, and sparrow; and the red-breasted robin, whose name Robert was originally an epithet of the lightning-god Thor.
f (4) The Germans still call it 'Zaunkonig' and the French 'roitelet,' both names thus containing the idea of 'king.'