The first three pics show variation that I could understand, due to varying climate conditions different from the original source, and/or from year to year. This could be with or without virus. I don't see any evidence virus (and unlikely in pic#4, too), but sometimes it doesn't show, and virus symptoms in tulips are very tricky, too. Really, I may be better than many of you, but I am a novice with tulip viruses.
Other possibilities:
---- I see in the pic#2, other tulips. Rodents sometimes dig up bulbs and move them to somewhere else.
---- Also in pic#2, please to look closely at the red tulip at the left edge of the photo. It seems exactly as pic#4, that you say is the new aberration. Can you explain?
