That's a very heavy and erudite title for such a light airy composition
. The mood of a hummingbird flitting about is captured quite well and the piece has a good flow.
I don't hear any problems - according to Rimsky-Korsakov, the flute and clarinet can play very rapidly, the oboe and bassoon are not quite as agile, and the horn is not at all agile.
Well done.