He thinks for a few minutes, attempting to choose his words appropriately and as he does so he sways gently back and forth without apparently meaning to. Snapping to attention once apparently having decided he in turn responds. "Thank you for that description 'The-Moon-Dusts-Her-Skin', we had attempted to decode much of the information that was left here and now I see we were slightly off on some assumptions. Recently, since reaching this station we were calling ourselves human since it seemed to denote a being that stood upright, had a central nervous system, distinctive face and head area, arms and legs. But now I see that Human was meant to be more specific than that. Apologies, but perhaps in future years our species might decide upon a name of our own."
"As for how I got here, well I flew. It was difficult and tiring, the electrical storms nearly consumed me as I passed through our clouds and out into the swirling colors after which the crystalline horror nearly swallowed me whole though I was faster. I rested some time on... our moons I suppose they are, my people had never previously gotten high enough to see them before and as such we had no name for them nor their inhabitants. Soon later I found that the air was getting much thinner, which made me nervous that I'd no longer be able to fly. Luckily though it seems to have had no effect on me, so soon there-after I alighted upon this fair station unto which I began my studies."
You begin to notice now that the dust motes swirling about his wings are in fact clouds of the crystalline material that keeps the islands floating high above the gas giant, though it is starting to seem that it is not a true gas giant at all but rather a large planetary body with an immensely strong magnetic field and plasma storms in it's upper atmosphere making it appear to be a gas giant.
He pauses momentarily while he thinks about your final question, "Well... physically speaking my people range in size from exceptionally small by your standards (he makes a cube about 1/2 a foot in height with his four hands.) up to slightly larger than me. Only the larger of us have wings, whilst the smaller ones tunnel among the rocks of our planet using an... acid I believe it would be called to let them consume the very stone itself. As well, depending on our lineage we can exist anywhere from temperatures akin to what is described here as deep space to I think it relates to 1000 C*. I personally subsist near your normal temperatures though this old station is far too cold for me currently. We breathe gaseous, liquid and sometimes frozen clouds of hydrogen, though many other chemicals are mixed in with our air none of them are necessary."
Noting the last thing you mentioned he looks puzzled and asks "Does that mean that you did not leave this station here hoping we would reach it?"